Some 287 candidates have been nominated for the prestigious prize, which was won last year by Venezuelan opposition leader María Corina Machado.

YouTube video by Hook Global

Mike Niziolek is committed to conservation and restoration, methodically transforming land for over 30 years back to what it was like hundreds of years ago.

YouTube video by David Bayer

YouTube video by Asha Nayaswami

A reckless plan to gut environmental laws could push endangered species past the point of no return.

Hot, dry Medicine Hat, Alta., is providing free trees to residents and planting its own in parks and public spaces to "shoulder up" the urban canopy after years of drought and wind storms damaged tree...