Bleached corals off Brazil this week. The world is currently experiencing a global coral bleaching event, according to the National Oceanic and Atmospheric Administration.
Biodiversity loss, global warming, pollution and the spread of invasive species are making infectious diseases more dangerous to organisms around the world.
White-footed mice, the primary reservoir for Lyme disease, have become more dominant in the U.S. as other rarer mammals have disappeared, one potential explanation for rising disease rates.
New research questions the long-held theory that reintroduction of such a predator caused a trophic cascade, spawning renewal of vegetation and spurring biodiversity.
Some say that the wolves’ contribution to ecological improvements in Yellowstone were only one piece of a larger picture and that grizzly bears, beavers and even humans played a role.
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