Courtesy
Dinopark Münchehagen A species of dinosaurs known as the
biggest land animals that ever lived, had some miniature
cousins, a study has found. According to researchers,
the little reptiles weighed about one fiftieth as much
as their closest relatives, the well-known
brachiosaurs—long-necked, massive
plant-eaters. It’s not the first scientific
sensation surrounding the discovery of a miniature
version of a familiar animal. And the last time such a
sensation arose, it didn’t turn out very
well. Researchers in...
by Worldsci
(Posted on June 12, 2006) (4 Views)
|
Courtesy
A. Nedelcu For the first time, scientists say they
have traced the origin of an “altruism gene,” possibly
shedding light on the nagging mystery of how generosity
and cooperation evolved. The findings, they add,
suggest that at least some altruism genes evolved from
genes that originally served to suppress some biological
activities in lean times. The scientists traced
an “altruism gene” in Volvox carterii, a
primitive multi-cellular creature, to its one-celled
ancestor. Volvox, thanks...
by Worldsci
(Posted on June 06, 2006) (37 Views)
|
World
Science Photo From Harry Potter to Star Trek, science
fiction is rife with invisibility cloaks. But can they
really exist? Two new studies suggest they could, at
least in theory. The researchers offered
hypothetical explanations for how they could
work. The devices could have a wide range of
uses, from high-tech spying to far more innocent
purposes, the scientists suggested. For example:
“You may wish to put a cloak over the refinery that is
blocking your view of the bay,” said David Schurig of...
by Worldsci
(Posted on May 28, 2006) (60 Views)
|
Canmag.com When researchers found 18,000-year-old
bones of a small, humanlike creature on an Indonesian
island in 2003, they concluded that the bones
represented a new species in the human family
tree. This view was widely accepted among
scientists and trumpeted by the press. Because of its
size, the creature was nicknamed the “Hobbit.”
But a growing number of scientists have raised
questions about the claim. In a new paper, some
researchers say the bones are probably just from an
ordinary...
by Worldsci
(Posted on May 25, 2006) (61 Views)
|
Probably the most shocking aspect of
Darwin’s theory of evolution has always been its
implication that we descend from ape-like ancestors. But
that idea may be easy to stomach compared with new
findings. A study has concluded that human and
chimp ancestors may have interbred for a long time after
their two lineages began to split apart evolutionarily.
The research also found the final separation was
more recent than previous research
suggested. “The study gave unexpected results
about...
by Worldsci
(Posted on May 22, 2006) (79 Views)
|
Three physicists say they
have done calculations showing that before the birth of
our universe, which is expanding, there was an earlier
universe that was shrinking.
The results stem
from a...
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New evidence has come to
light in one of prehistory’s greatest “whodunnit”
stories—a spate of animal extinctions more than 10,000
years ago.
Overhunting by humans in North America
has been...
|
Space shuttle Discovery was
moved Friday from its hangar to an assembly building.
This is an important milestone in preparing the
spacecraft for launch in July.
The prone,
122-foot-long shuttle...
|
Some dolphin whistles appear
to convey the caller’s individual “name” information,
researchers report in a new study. The scientists found
that these whistles are recognizable to other dolphins
even...
|
A newly discovered fish
species that lived more than 400 million years ago may
represent a bridge between modern fish and land animals,
scientists say.
Found in Yunnan, China, the
creature...
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Researchers say they have
engineered a virus that tracks down cancerous cells and forces
them to devour themselves. The scientists, with the...
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Twelve journalists from six
countries have been named Knight Science Journalism fellows
and will spend the 2006-2007 school year studying at the...
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A Comment]
A persisitent difference in
temperature readings that raised questions about global
warming has been resolved, according to the report of a panel
of... [Write
A Comment]
Researchers say they have
uncovered a mechanism behind the normal aging process, based
on studies of children with a devastating “early-aging”...
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A Comment]
President George W. Bush today
announced that 100 educators will receive the annual
Presidential Awards for Excellence in Mathematics and
Science... [Write
A Comment]
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LATEST SCIENCE NEWS
DISCUSSIONS
A species of dinosaurs
known as the biggest land animals that ever lived, had some
miniature More»
For the first time,
scientists say they have traced the origin of an “altruism
gene,” possibly More»
From Harry Potter to
Star Trek, science fiction is rife with invisibility cloaks.
But can they More»
When researchers found
18,000-year-old bones of a small, humanlike creature on an
Indonesian island More»
Probably the most
shocking aspect of Darwin’s theory of evolution has always
been its implication More»
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