Top Science Stories of 2005: A Year of Incredible Impact
January 1, 2006
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But realize this, that in the last days difficult times will come. For men will be lovers of self, lovers of money, boastful, arrogant, revilers, disobedient to parents, ungrateful, unholy, unloving, irreconcilable, malicious gossips, without self-control, brutal, haters of good, treacherous, reckless, conceited, lovers of pleasure rather than lovers of God, holding to a form of godliness, although they have denied its power; Avoid such men as these. For among them are those who enter into households and captivate weak women weighed down with sins, led on by various impulses, always learning and never able to come to the knowledge of the truth. Just as Jannes and Jambres opposed Moses, so these men also oppose the truth, men of depraved mind, rejected in regard to the faith. But they will not make further progress; for their folly will be obvious to all, just as Jannes's and Jambres's folly was also. (2 Timothy 3:1-9)
Then He continued by saying to them, "Nation will rise against nation and kingdom against kingdom, and there will be great earthquakes, and in various places plagues and famines; and there will be terrors and great signs from heaven. (Luke 21:10-11)
Rarely have science and nature dominated daily life and generated so much debate as in 2005. Did one issue emerge as the top story? LiveScience invites you to vote on the most significant development.
The Hurricane Nightmare Comes True
The
busiest hurricane season on record brought the most intense Atlantic storm
ever recorded and ran several days beyond its official Nov. 30 end, while
scientists provided the first solid evidence that global warming might be
fueling more powerful storms. These were all big stories in and of themselves,
yet none will stick with us like the memory of Katrina, the most destructive
storm ever to strike the United States and a long-predicted nightmare for
resident of New Orleans. Nature's wrath forced scientists and officials to
assess preparedness for other dramatic natural threats the country could face.
Evolution on Trial
Intelligent
design, which posits that an intelligent being and not Darwin's theory of
natural selection is responsible for some of the most incredible variations in
species, exploded into public view. The Kansas school board voted against
science, as did Alabama's when it voted to tell students that evolution is
controversial. Eight families in Pennsylvania sued over the whole thing. And
voters in one district ousted school board members for inserting religion into
science classes. Meanwhile, scientific leaders broke a longstanding silence to
defend evolution and discredit intelligent design as being unscientific,
impossible to prove, and nothing more than cloaked creationism. Even the
Vatican weighed in. The issue promises to permeate discussions of science and
religion as long as the two exist.
The 10th Planet?
You
might think the discovery of an object larger than Pluto orbiting the Sun
would automatically be hailed as the long-sought 10th planet. Not so fast,
many astronomers said. This new world is one of perhaps thousands out there
that await discovery. Will we call them all planets? Should Pluto even be
considered a planet? In a weird twist to the debate, the discoverer of the
controversial object suggests we all ignore the scientific debate and let
culture decide. One has to wonder if that's the sort of ambiguity science
ought to promote.
The Apocalypse, or Just Mother Nature?
It's
not your imagination: Natural disasters are becoming more common. But don't
blame Mother Nature; we humans are moving in droves to disaster-prone
coastlines and living in substandard structures. The magnitude
7.6-earthquake that struck Pakistan and killed upwards of 80,000 people was
just another example of our inability to deal with events that are
statistically normal. Christian televangelist Pat Robertson didn't let
science cloud his vision, however, when he said the quake and a busy
hurricane season might be signs that the Biblical apocalypse is near.
Signs of Life on Mars?
This
story extends back to last year and looks like the sort of mystery that'll
keep scientists scratching their heads for years to come. The air of Mars
seems to contain pockets of methane in doses that should not exist. Perhaps
it's the belchings of subsurface microbes, European astronomers said early
this year. They support that view with new evidence for blocks of
underground ice in the same region as the methane. The ice could be
supplying the precious liquid water needed to support the biology, they
figure. Other astronomers think the reasoning is very speculative, however.
Rebuilding Humans
The
"Six Million Dollar Man." would appreciate the printable skin
that's coming out of special inkjet printers now. The fictional bionic man,
Steve Austin, was way ahead of scientists on synthetic body parts, but he'd
be pleased to see the progress in 2005 on prosthetic limbs that humans might
one day control with their minds. Monkeys were made to operate a robotic arm
with just their thoughts via a computer attached to their brains. Further
study found they treat the device as if it were a natural appendage.
Meanwhile, the U.S. Military said further research into these devices would
become a priority. No "fixing humans" story gained more attention
this year than the first partial face transplant.
(Way) Back to Nature
In
one of the year's more offbeat suggestions, scientists proposed introducing
elephants, lions and camels to create a U.S. Ecological History Park that
would return parts of the country to conditions similar to the distant past
while also preserving animals that are threatened in Africa. In Siberia, a
similar project is already underway. Scientists are working to restore a
large area of wetlands and forest to the dry landscape that existed more
than 10,000 years ago by re-introducing herbivores and predators they think
will alter the biology and ecology. One goal: learn what caused the woolly
mammoths to go extinct. Meanwhile, another group announced plans to search
for frozen woolly mammoth sperm DNA, which they would inject into a female
elephant; after several generations of offspring by controlled procedures,
they would create a beast that is 88 percent mammoth. Amid all this, another
team decoded part of the genome of an extinct bear!
Our Lowly Ancestors
A
fresh analysis of two previously found skulls determined they're 200,000
old, making them the oldest known examples of our species. Yet fossil
records indicate musical instruments, drawings, needles and other
sophisticated tools didn't appear until about 50,000 years ago, suggesting
Homo sapiens had a pretty lowbrow culture for 150,000 years. Well, evolution
takes time. Another team found the fossilized remains of what they think is
humankind's first walking ancestor, from 4 million years ago. Other research
confirmed that the oldest human ancestor, from the time when we split with
the apes, lived around 6 million years ago. Oh, and you have to respect our
relatively recent ancestors (the lowbrow folks) who we now know lived among
10-foot-tall gorillas that have since gone extinct. Maybe they were so busy
running they had no time to paint or create alphabets.
Total Neanderthals
Anthropologists
scrounged around museum halls to put together bones from various specimens
to make the first Neanderthal skeleton. And the result surprised them:
"As we stood back, we noticed one interesting thing was that these are
kind of a short, squat people," said Gary Sawyer of the American
Natural History Museum in New York. "These guys had no waist at
all—they were compact, dwarfy-like beings." Meantime another team
announced plans to reconstruct the Neanderthal genome from fossil fragments.
Super-Earth Discovered
Astronomers
expect to eventually find many Earth-sized planets around other stars. But
technology can't spot such small objects yet. Pushing the limits of existing
methods, researchers detected a world just 7.5 times the mass of Earth
orbiting another star and said it must be rocky. This year marked the 10th
anniversary of the discovery of the first extrasolar planet around a normal
star, and astronomers have gathered enough data on about 150 planets since
then to say, in the words of Geoff Marcy, "I imagine most stars have
terrestrial planets. It seems hard not to form them."
The Reality of Myths
Finally,
visual proof of the longstanding myth. Japanese scientists got the first
images of a giant squid in its natural environment. In California,
meanwhile, hundreds of huge squid washed ashore. And another new species of
large squid was captured on video. Otherwise, it was a typical year for
creatures of myth (some of which, like the squid, turn out to be real, by
the way), with Bigfoot fans staging a conference and scientists exploring
claims of a giant lake monster in Canada. Seems even scientists like a good
tale; one team found an ancient sea creature that looks to be part
crocodile, part T. rex and dubbed it Godzilla.
Decoding the Software of Life
It
was a big year for genome decoding. Scientists deciphered the DNA of man's
best friend, along with humankind's closest relative, the chimp. Such
findings are becoming so routine, however, that you might not have even
noticed that the genome of rice was revealed, too. The ongoing investigation
into our own DNA, meanwhile, revealed that identical twins are not so
identical. Other researchers reported that about 9 percent of human genes
are undergoing rapid evolution.
Shrinking the Invisible
In
the world of nanotechnology, which is measured in molecules, engineers
crafted some nifty miniature machinery this year. Different teams created
the world's smallest car, motor, robot, refrigerator and fountain pen. One
hope is that these tiny machines, invisible to the human eye, will one day
be used to deliver drugs into cells, perhaps to destroy cancer or cure other
ills. Technology tasks are envisioned too. In one nifty breakthrough,
researchers merged microbe and machine for the first time, creating
gold-plated bacteria that sense humidity.
Birth of a Black Hole
An
explosion 2.2 billion years ago, whose light just arrived at Earth this
year, was detected and then monitored by an unprecedented array of
telescopes on the ground and in space operated by astronomers furiously
exchanging emails. Within moments, the scientists suspected they had seen
the birth of a black hole as it happened (well, except for that previously
mentioned time delay). The event was triggered by the merger of two neutron
stars, the thinking goes.
Advancing Humanoids
A
longstanding goal of robotics is to make them more humanlike. Several small
steps in that direction were achieved this year. One team developed robots
that walk like us. A NASA researcher announced robotic skin that can feel
things. Another bot looks so humanlike you might want researchers to stop
this trend. Then again, who could complain about a robotic bartender that
pours and listens.
Copycat Cloning
Making
replicas of animals has become so routine since Dolly the sheep in 1996 that
the story about Snuppy, the first cloned dog, didn't have the bite it might
once have had. Meanwhile, Dolly's creator this year got a license to clone
humans. Apparently one day your double can walk your dog's double. All the
advances in mucking with the formulas for life led to an interesting
clinical trial in which parents will pick the sex of their babies (other
research shows most women would choose if given the option, but overall
there was no clear preference). The year ended on a notable down note (dare
we say duplicitous?) when a South Korean cloning pioneer admitted the
ethically questionable practice of using some of his own employee's eggs.
First Photo of an Extrasolar Planet?
A
series of announcements about the possible first picture of a planet around
another star ended up in a debate that has yet to be resolved. The pictures
are real, but astronomers can't agree on the masses of the objects in the
images or, for that matter, how to state the difference between large
planets and small stars. We'll have to wait for history to tell us if this
was a big story or not.
Toward Immortality
"I
think it's reasonable to suppose that one could oscillate between being
biologically 20 and biologically 25 indefinitely." That's what
eccentric researcher Aubrey de Gray, who thinks aging can be cured, told
LiveScience in an interview this year. De Grey also runs the Methuselah
Mouse prize for breakthroughs in extending the lives of mice, which
researchers hope will spill over into progress to slow human aging. The
purse of the M Prize, as it is called, grew beyond $1 million in 2005. As
for hard science, one study showed that the buildup of mutated DNA triggers
aging in mice. Another found stimulation of a certain gene in mice seems to
delay bone weakening, artery clogging and loss of muscle fitness. Modern
medicine is already allowing life expectancy to creep up, and it hit an
all-time high in America this year. Ray Kurzweil, a computer scientist and
writer, explained that his plan to live forever involves not tailgating, but
taking 250 supplements and drinking lots of alkaline water and green tea.
Protecting Ourselves
Some
day, scientists have been telling us for some years now, we'll have to deal
with an incoming asteroid or comet that would destroy civilization at worst
or wipe out a city at least. Big impacts have occurred before, and there
will be more. But we don't know enough about space rocks and their
composition to plan properly for deflecting or destroying such a menace.
Turnabout proved to be fair play when NASA's Deep Impact mission slammed a
probe into Comet Tempel 1 on the 4th of July. The upshot? This comet was
fluffy, unlike others that have been studied up close. Meanwhile, a group of
astronauts and scientists prodded NASA to visit asteroid Apophis, which has
a slight chance of hitting us a few decades hence. NASA's response: A purely
scientific mission might be considered, but we have plenty of time to mount
a diversion if further observations show this thing would really hit.
Global Warming Heats Up
We
can all stop arguing about whether the climate is changing. Evidence is
overwhelming, from shrinking glaciers to melting polar ice caps and seas
rising at twice the rate of the pre-industrial era. Animals are changing
migration and mating patterns; in the North, 125 lakes disappeared; river
ice is melting sooner in spring. This year is expected to be the hottest,
stormiest and driest on record. The big remaining question is how much of
the trend is natural (scientists admitted they know little about the Sun's
role!) and how much is exacerbated by greenhouse gas emissions. Meanwhile, a
host of studies made dire predictions about the inevitability of rising
temperatures and swamped coastlines over the next century. Nasty side
effects were predicted: more intense rainstorms; worse droughts; stronger
hurricanes; increased allergies; ice-free arctic summers; and economic
costs. A couple novel solutions were proposed: altering airline flights and
lofting a ring of miniature satellites to shade the equator. Tempers rose in
2005, too, with the year closing on a low note from the perspective of more
than 150 nations who pledged to do something about the problem, without the
support of the United States or China.
SOURCE: Live Science