Many nations have pledged to reforest vast swaths of land, but ensuring ecosystems’ recovery and survival will require long-term commitment.

The Nissan Leaf led the pack with 247 sales in January, narrowly beating the Chevy Bolt, with the Hyundai Kona, Tesla Model 3 and Mitsubishi Outlander PHEV rounding out the top 5.

It was an apology decades in the making. Initially delayed for a day by a storm, Prime Minister Justin Trudeau arrived in Iqaluit, capital of the Arctic Canadian territory of Nunavut, on March 8, to deliver an historic apology to Inuit communities. Here's what you need to know about the issue and why it matters.

Our planet’s level of carbon dioxide in the atmosphere reached a new, jarring record last month. 411.66 parts per million. What was shocking was that it occurred so early in the year: Earth’s carbon dioxide levels typically peak in May...