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Weather
Coldest Place on Earth
Scientists only recently discovered the coldest place on earth on the Polar Plateau of the East Antarctic ice sheet.
Cities With the Best Weather
Cities with the best climate have the right combination of temperature, sun, rain and wind. Here's what most people agree makes for good city weather.
Natural Hazards
What Are the Odds You'll Get Struck By Lightning?
The chances of getting killed by lightning in Canada are generally less than one in a million. But some people's odds of encountering a deadly strike are much higher than average.
Winter Storms Have Grown More Devastating
Severe winter storms that leave behind million of dollars in damage have become less common in the United States. But, individual storms have become more massive and destructive.
Wildlife
How Many Undiscovered Species Are Left to Find
Most of the world's species remain undiscovered by science. Here are estimates of how many animals and plants have yet to be found.
Warming Causes Salamanders to Lose Their Stripes
Red-backed salamanders in eastern North America have responded to warming temperatures by losing their namesake red stripe.
Climate Change
Thoreau Waited Longer for Spring to Arrive
Scientists have compared their own recent observations of when Massachusetts plants start flowering in spring with the records Henry David Thoreau made 150 years ago.
Arctic Ice Dynamics Destabilizing
Global warming has broken down the relationship between Arctic climate patterns and fluctuations in the volume of Arctic ice.
Endangered Animals
Why Orangutans Are Endangered
Loggers, farmers, poachers and pet dealers have all played a role in the endangered orangutan's decline.
Recently Extinct Animals in North America
List of extinct animals and plants in Canada and the United States, including species and subspecies that have disappeared since 1960.
Forests
Why Tree Ranges are Different Sizes
Scientists have uncovered the overriding principles that govern why some tree species are confined to a narrow range of latitudes while others thrive across a continent.
Warm Climate Opens Boreal Forest to Pine Beetles
Temperatures in boreal forests extending across Canada will soon be warm enough for destructive mountain pine beetles.
Invasive Species
Islands Rescued From Invasive Rats
Huge gains have been made over the last twenty years in stopping invasive rats and mice from destroying island biodiversity.
Aquarium Fish Poised to Invade Lakes
People dumping their pet fish into local waterways could introduce yet another exotic species into the Great Lakes watershed.