An Associated Press investigation reports that a vast array of pharmaceuticals show up in the water of 41 million Americans. The drugs are concentrated in the water in tiny quantities, but some scientists worry that there could still be harmful effects for humans.
Global climate change has already had observable effects on the environment. Glaciers have shrunk, ice on rivers and lakes is breaking up earlier, plant and animal ranges have shifted and trees are flowering sooner. Effects that scientists had predicted in the past would result from global climate change are now occurring: loss of sea ice, accelerated sea level rise and longer, more intense heat waves.
Before the Flood - Full Movie | National Geographic - Join Leonardo DiCaprio as he explores the topic of climate change, and discovers what must be done today to prevent catastrophic disruption of life on our planet. ➡ Subscribe: