The Magazine Mountain shagreen snail may soon become the first invertebrate to be removed from the Endangered Species List. Read the success story here.
Tropical Storm Isaac is expected to make landfall late Tuesday or Wednesday, which is the anniversary of Hurricane Katrina in 2005. It's a much weaker storm.
Tsunami warning issued and then cancelled for stretch of central American coastline last night, following strong 7.3-magnitude earthquake off El Salvador coast.
Everyone from Houston, Texas east to Tallahassee, Florida should watch Isaac closely. Hurricane Watch issued for part of northern Gulf of Mexico coast.