Meteorologist Peter Forister spent the first week in May on the Great Plains, witnessing eight tornadoes over three days. Read his storm chasing account.
A professor of anthropology says a population of Homo floresiensis, nicknamed Hobbits, believed extinct for 50,000 years, may still exist in Indonesia.
A new study of ancient zircon crystals found in South Africa and other locations shows that plate tectonics on Earth began about 3.8 billion years ago.