What is our earth's history? New research suggests that life on Earth has existed without interruption for longer than we thought.
Killer whales communicate in a variety of dialects. There are discernible differences, however, between the chatter of killer whales that eat only fish and those that eat both fish and seals.
According to a report published in the journal Environment Science & Technology , computers are more environmentally abusive than we tend to think. Microchips, those tiny and much heralded silicon wafers that allow computers to do their thing, are voracious consumers of water, fossil fuels, chemicals, and gasses such as nitrogen.