Scientists at the Missouri Botanical Garden have confirmed the discovery of two tree species that were thought to be extinct.
Last year botanists from the University of Dar es Salaam in Tanzania set out to look for the trees. They discovered small populations of both species in a remote forest in southeastern Tanzania, along Africa’s eastern coast.
Missouri Botanical Garden botanist Roy Gereau worked with British scientist Phil Clarke to confirm the identity of the trees.
The U.S. Food and Drug Administration has denied a call to ban the plastic additive BPA from food packaging. The action comes after government scientists found little reason to think people are being harmed by the chemical.
The FDA was responding to a petition from the Natural Resources Defense Council, which called for the ban on BPA, also known as bisphenol A, from any use where it comes in contact with food.
Two newborn lion cubs are being raised by staff at the Saint Louis Zoo more than a month after their birth, but two other cubs in the litter have died.
The African lion cubs were born Feb. 14 to the 6-year-old lioness Cabara. The zoo said Tuesday that two did not survive because Cabara couldn't produce enough milk to feed them. Zoo officials say it is not uncommon for lion mothers in the wild to rear fewer than 50 percent of the cubs born in a litter.
The Illinois Department of Public Health says the state experienced a record low number of new tuberculosis cases last year, but the news isn't all good.
Health officials say Illinois still ranks fifth in the nation when it comes to the number of TB cases. And Health Department Acting Director Arthur Kohrman says many of the new cases are the drug-resistant type, which are harder to overcome.
Officials say 359 cases of active TB were reported in Illinois in 2011. That's a decrease from 372 cases reported in 2010.
Forty-three teams of teens from Missouri and four surrounding states be competing in the FIRST (For Inspiration and Recognition of Science and Technology) Robotics Competition regional this weekend at Chaifetz Arena in St. Louis.