Alzheimers Risk: Home testing has clients and critics
We’re not finished yet. Mankind is no perfect work. As a product of evolution, the design is haphazard, part fish part monkey.
Building a better genome? In a first, a bacterium's entire genetic code was re-created. Experts see benefits down the road
'Asterisks'
in the DNA Changeable chemical "tags" on genetic code may
be the keys to individuality and
emergence of disease. Science goes beyond the genome: It's called epigenetics.
Nobody's perfect It turns out there is no norm for DNA, scientists say. Discoveries about the variability of the human genome help shed light on disease and evolution.
For now, stem cells hold more hope than answers The hype could be getting in the way of science.
Ingenious genetics New ways to create medically promising stem cells may raise fewer moral and religious objections.
The lefty mysteries In pursuing the "handedness" riddle, scientists are unlocking secrets of the brain, genetics and human diversity.
The world's oldest redheads? DNA paints a picture of Neanderthal man. – 10/26/07, A1
From Delaware to the moon? If NASA returns, a firm hopes its shelter goes, too
New perch for a telescope Supersize balloons are lifting scientists' sights, allowing them to see farther into space.
Mars focus leaves NASA projects hanging
Where no Voyager's gone before
Maybe the answer rests in a black hole. Hawking's question still stirs physicists 30 years later, Hawking returns to 'a very deep question'
Biosphere's lessons, For a space colony, NASA can learn from ecology experiment
Cold enough for you? You should see the crazy things that happen near absolute zero.
Neutrino is town's new stake A state-of-the art science lab might energize the old mining area. Or not.
On reentry, astronauts ride in fireball
SEEKING NEW DIMENSIONS
PHYSICISTS ARE IN HOT PURSUIT OF EVIDENCE FOR DIMENSIONS BEYOND
THE THREE WE LIVE IN. THEIR INQUIRIES MAY HELP US SOLVE SOME OF SCIENCE'S
MOST NAGGING QUESTIONS - AND EVEN OPEN THE DOOR TO OTHER WORLDS. 7/21/2000,
C1
NATURAL SELECTION ON A COSMIC LEVEL
OUR UNIVERSE MIGHT HAVE EVOLVED FROM EARLIER
ONES, A PENN STATE PHYSICIST HYPOTHESIZES. 8/11/97, A1
NO, THE END IS NOT NEAR. BUT IT SURE IS BLEAK. 1/16/97, A1
A QUEST TO TEST THEORY ON EARTH'S FIRST LIFE
COULD THE SAMPLE BE 3.85 BILLION YEARS OLD,
THE OLDEST YET? A TRIP TO GREENLAND COULD TELL. 2/20/2000, A1
Experts believe test was nuclear Small, still deadly, U.S. scientists say. U.S. experts: North likely used salvaged plutonium
To light up - or blow up - the world Countries with nuclear reactors could, with relative ease, turn from producing power to producing bombs. Preventing that is a challenge
Hunting Hussein's secret arms Inspectors will have to sift subtle clues, experts say.
Ancient
treasures, modern tragedy Afghanistan's archaeological trove
has long been threatened - when it hasn't
been destroyed. Replicas recently sent to Penn suggest how rich the heritage
is.
Anatomy's graveyard More than 1,000 bodies found at a construction site in West Philadelphia tell a story about science, medicine and society in the 1800s
One origin, many races All humans, regardless of skin color, facial features and body form, share a common genesis, DNA analyses say. Even so, categorizing by such traits continues as a social construct.
Why powerful men take such obvious risks Scientists say desire is natural. And politics attracts men who may have excess, uh, energy.
Can faith, science coexist? Evolution and Christianity are not incompatible, many believe
Spinning science as a political tool Researchers bemoan how scientific results are being contorted to fit political agendas