Curated OER
Endangered species
Students define the following words: extinction, endangered species, meteorite collision, glaciation and climate warming. They investigate that there are 307 species on the endangered list, and an average of 10-20 species are added each...
Other
Virtual Exploration Society: Leonid A. Kulik
Find out about Leonid Kulik, Soviet meteorite expert, who made several expeditions in the 1920's to the site of mass destruction in Siberia possibly caused by a meteorite.