North Atlantic right whales are one of the world’s most critically endangered large whales, but if you’re lucky, you can still see them: a mother nursing her newborn in the warm waters off the Georgia or Florida coast, their only known calving grounds; right whales socializing and feeding in the fertile waters of Cape Cod Bay, sometimes within sight of shore; whales — black, 50 feet long, and weighing some 100,000 pounds — rising through the water in the Bay of Fundy or the Gulf of St. Lawrence, the northern end of their thousand-mile-plus migration route.

Invasive species continue to be a critical threat to freshwater ecosystems in Saskatchewan and across North America.

But the species that have yet to enter Saskatchewan waters might be of greatest concern.

Researchers have determined what could be considered a “Goldilocks” climate for rainfall use by plants: not too wet and not too dry. 

A University of Central Florida biologist whose groundbreaking work tracking the movements of sea turtle yearlings in the North Atlantic Ocean attracted international attention has completed a similar study in the South Atlantic with surprising results.

Logging of the largest trees in the Sierra Nevada’s national forests ended in the early 1990s after agreements were struck to protect species’ habitat.

Researchers study impact of ice storms, climate change

Some avian influenza, or bird flu, viruses that are able to enter North America from other continents through migrating birds can be deadly to poultry and can infect waterfowl populations, according to a recently published U.S. Geological Survey study.

A compound found in seaweed could protect human skin from the damaging impact of the sun without causing harm to marine ecosystems. 

Concerns about biodiversity tend to focus on the loss of species from ecosystems, but a new study suggests that the loss of variation within species can also have important ecological consequences.

Trees in California communities are working overtime. From removing carbon dioxide and pollutants from the air, intercepting rainfall and increasing property values, California's 173.2 million city trees provide ecosystem services valued at $8.3 billion a year. However, according to a recent study, more benefits could be realized if the Golden State's urban forests didn't have the lowest canopy cover per capita in the nation.