Mohammed Momin Khawaja, the first man convicted under Canada's anti-terror laws, was involved with foiled bomb plot in Britain.
Climate change is pushing marine animals out of their protected areas. Ways must be found to ensure that their protection migrates with them, naturalists say.
In Canada, the president's first foreign destination, the focus will be on rebuilding a deep alliance. Differences loom however, on climate change, protectionism, and troops in Afghanistan.
But critics say the efforts amount to a dangerous step toward legalizing drugs.
On Tuesday, a US Army deserter was deported. An unrelated but simultaneous video release showed a Canadian Gitmo detainee taken at age 15 crying, 'Oh Mommy!'
The sea was not so vast, once we deployed an industrial armada against it.
How gators move so quietly, a creative invasive snail, corn's impact on algae, and a global climate regulator.