Malaysia's last male Sumatran rhino dies: officials

Malaysia's last surviving male Sumatran rhino died Monday, wildlife officials said, leaving behind only one female in the country and pushing the critically-endangered species closer to extinction.

Defending against chemical acts of terrorism

Researchers may have found a way to protect us against otherwise deadly chemical attacks, such as the subway sarin incident in Tokyo that left thirteen people dead and thousands more injured or with temporary vision problems. ...