Wednesday, 22 May, 2013

Space messengers: Private or public?

Meteorite hunters were out in force after the biggest impact in 100 years injured more than 1,200. Does the meteorite market damage science by sending the best samples to private collections, or does it feed science as well as the market?

Thursday, February 28th, 2013

When dead men speak…

British archeologists unearthed bones of Richard III, who died in 1485 after a murderous reign. How do bones, isotopes, historic records, DNA and grave goods tell us about the dead?

Thursday, October 4th, 2012

Galactic rays

Scientists have tracked a light beam that’s half-a-million light years long to a monster black hole and found that the hole and its disk of orbiting junk are spinning in parallel. Their new, supersize radio telescope promises more details on black holes at the center of most galaxies, including ours.

Thursday, September 27th, 2012

Finding the killers — in advance

Can we spot these young, male, angry, frustrated killers in advance? Will science help us identify them in time?

Thursday, August 2nd, 2012

Final score: Mustard-bomb plant 1, mouse 0

Plants and animals are in a constant struggle for survival and reproduction. Plant toxins prevent most animals from eating their seeds and destroying them. No kidding: A desert mouse is smart enough to eat edible fruit flesh without triggering the “mustard-oil bomb”!

Thursday, June 14th, 2012

Super-volcanoes!

Take a modern volcano, and multiply it by 1,000. That’s a super-volcano. Their rare eruptions change landscapes and weather. How long can giant pools of molten rock sit beneath the surface before a super-v blows? A new study says, not long at all…

Thursday, May 31st, 2012

Denial of science, science of denial Tobacco and cancer. CFCs and ozone. Vaccines and autism. And evolution through natural selection, acid rain and global warming. Why do the facts get lost in a cacophony of argument, falsehood and outright denial? A conference looks at why the media get taken for a ride, and how they can improve.
Thursday, May 3rd, 2012

Shaking it up: Maverick scientist dies

Sometimes, scientists feel the need to leave the lab and warn the public about onrushing hazards. Rowland warned about ozone, but others are warning about warming. Does scientific culture encourage or hinder going public? Does the helpful response to ozone depletion suggest we’ll succeed in confronting global warming?

Thursday, March 22nd, 2012

Flight without wings

Scientists thought wings were the first evidence of flight. But plenty of falling ants can glide back to “their” tree to avoid being devoured on the forest floor. If an ant’s brain and body are able to detect its position and change its flight path, is gliding the first flight?

Thursday, December 8th, 2011

Running out of space

With space shuttles in museums, what is the near-term American plan to return to space? Can other countries or private companies fill the gap?

Thursday, September 29th, 2011

Science on the road!

Hitting the road? What could be more enlightening than gawking at a cave, exploring a desert, or eyeballing the largest telescope in the world? Need proof that science is not just books and websites or equations and software? Get moving!

Thursday, August 4th, 2011

Testing seafood in the Gulf

Fish contamination was rare after the giant oil spill in the Gulf of Mexico in 2010, with levels of dangerous hydrocarbons well below “levels of concern.” But nobody looked systematically at heavy metals, the Gulf still has a lot of oil, and the many different hydrocarbons may have unpredictable impacts.

Thursday, May 12th, 2011

Breaking the Cambrian barrier

Darwin thought life had to predate the Cambrian era, and yet there was no evidence. In 1953, a Wisconsin geologist saw fossils aged almost 2 billion years. Now, life has been discovered in rocks from 3.5 billion years. What was life like, and how do we recognize it?

Thursday, April 28th, 2011

Coffee: Drink of the gods?

Coffee’s not just a mood-boosting addiction: That complex chemistry could help with diabetes, dementia, heart disease, cancer.

Thursday, April 21st, 2011

Peopling the Americas — New evidence

A report that people were in Texas 15,500 years ago settles a long dispute: The Americans who made Clovis-style spear-points were not the first Americans — despite heavy archeological skepticism. Pre-Clovis rules! But who were the pre-Clovis people, and why are scientists so dismissive of contrary evidence?

Thursday, April 7th, 2011