Science briefs
Jan 25, 2005
<b>Orb innocent<br>WASHINGTON — </b>Global warming and not a giant asteroid may have nearly wiped out life on Earth some 250 million years ago, an international team of scientists say.
Orb innocent
WASHINGTON — Global warming and not a giant asteroid may have nearly wiped out life on Earth some 250 million years ago, an international team of scientists say. The mass extinction, known as the ‘Great Dying,’extinguished 90 percent of sea life and nearly three-quarters of land-based plants and animals.
Healthy run
WASHINGTON — Rats that were ‘born to run’ not only outpaced their less-talented cousins but also were naturally less prone to heart disease, a finding that may help explain why exercise prevents heart death, researchers said on Thursday. The study is bad news for those people who hate to exercise, suggesting that not only laziness but also their genes put them at risk of heart disease.
Odour saves
LONDON — Researchers have found chemicals produced by the human body that repel mosquitoes, which could lead to a natural, odourless bug spray. Scientists have long known that some people are more tempting targets for mosquitoes than others.
WASHINGTON — Global warming and not a giant asteroid may have nearly wiped out life on Earth some 250 million years ago, an international team of scientists say. The mass extinction, known as the ‘Great Dying,’extinguished 90 percent of sea life and nearly three-quarters of land-based plants and animals.
Healthy run
WASHINGTON — Rats that were ‘born to run’ not only outpaced their less-talented cousins but also were naturally less prone to heart disease, a finding that may help explain why exercise prevents heart death, researchers said on Thursday. The study is bad news for those people who hate to exercise, suggesting that not only laziness but also their genes put them at risk of heart disease.
Odour saves
LONDON — Researchers have found chemicals produced by the human body that repel mosquitoes, which could lead to a natural, odourless bug spray. Scientists have long known that some people are more tempting targets for mosquitoes than others.