It appears as just a speck on the horizon, a slightly darker shape against a vista of Arctic ice. Soon enough, the ship's bridge makes the announcement: "Polar bear, starboard."Crew and passengers onboard the CCGS Louis S.
Conversations about climate change have ranged from skepticism that it exists in the first place to strategies for ending it. Today, we have a different conversation with environmentalist Mark Hertsgaard, author of HOT: Living Through the Next Fifty Years on Earth.
The soothing gases delivered by anesthesiologists to get patients through a rough procedure or surgery have done wonders for pain management.But now scientists have found that these tools aren't so friendly to the environment.