Societies forget, and this physicist wants to know why.
A state-by-state breakdown of policies that could change your community.
Both the Atlantic and Pacific areas saw a record number and intensity of storms.
Astronomy: Timothy Ferris eyes the amateur asteroid-watchers.
New designs and materials will make future skyscrapers sturdier, safer, and smarter.
Embryologist Irina Polejaeva talks about the successes and challenges of cloning performance horses
Reporting from the Gulf, an offshore oil rig worker finds mundanity, a complacent obsession with safety, and the doom beneath it all
The jury is out, but the answer always entails a healthy dose of biology and sociology.
The big and bad crises that could wipe out humanity
The best sources to follow the unprecedented torrents of information flowing from the ground via social media tools
In a highlight of last week's conference, Gates calls for zero emissions and agrees with Obama: We need nukes
Book of the month: Ghosts of Vesuvius
If one of your hominoid ancestors hadn't gotten a viral infection millions of years ago, you might look really, really different today.
Scientists are still working out why some species are more likely to die out than others.
Residents of one of the Internet's most populous virtual worlds shop, attend class-even run businesses. Soon you may do the same.
How safe can a citizen expect to be in a post 9/11 city? What technology can a city use to make its citizens safe?
Heavy crowds and dry conditions could present a real threat to our wildlands.
Did an eruption turn Icelandic vikings into Christians?
We're closing in on one of the most important numbers in the universe.
Last May, a massive tornado leveled Joplin, Missouri. Was it chance, or a warning of things to come?