There's a new fear from climate change: bacteria and viruses buried in frozen ground coming back to life as the Arctic warms up. We went digging in permafrost to find out how worried we should be.
In Zambia, some people were so hungry that they risked their health to eat hippo meat infected with anthrax. Researchers say it reveals how food insecurity can spread disease.
Zombie bacteria in defrosting reindeer carcasses brought anthrax back to Siberia. Now the government wants to slaughter 250,000 reindeer to stop the spread.
Russia is experiencing its first anthrax outbreak in more than 70 years. One child died. Health officials think it might have been triggered by warming permafrost, which unleashed dormant bacteria.
NPR's Geoff Brumfiel reports that the samples of anthrax the Pentagon thought were dead, were still alive. The Pentagon says the public was never at risk.
The numbers are more than the Pentagon's Thursday estimate of nine states and a U.S. Air Force base in South Korea. News organizations named Australia as the other country that received the samples.
The chief disease agency in the U.S. is looking into why the spores shipped to laboratories in nine states and a military base in South Korea hadn't been properly neutralized. So far no one is sick.
The Pentagon says an attempt to ship inactive anthrax samples resulted in live samples being sent to labs in nine U.S. states and to a U.S. Air Force base in South Korea.
Current tests require growing anthrax in the lab, which isn't the best option for labs in Afghanistan. So engineers have come up with a credit-card-size test that could make the world a safer place.