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Climate and Environment

Monarch butterfly numbers skyrocket in Mexico

Mexican experts said this week that 35 per cent more monarch butterflies arrived this year to spend the winter in mountaintop forests, compared to the previous season. Experts say the rise may reflect the butterflies’ ability to adapt to more extreme bouts of heat or drought by varying the date when they leave Mexico.

A monarch butterfly takes off from a tree trunk in the winter nesting grounds of El Rosario Sanctuary, near Ocampo, Michoacan state, Mexico, Jan. 31, 2020. (AP Photo/Rebecca Blackwell)

Explainer: Where do hydro poles come from?

The devastating storm in southern Ontario and Quebec last weekend damaged thousands of hydro poles across the two provinces. CTVNews.ca gives a rundown of where utility companies get their hydro poles from, as well as the climate challenges in the grid infrastructure.

Weather's unwanted guest: Nasty La Nina keeps popping up

Something weird is up with La Nina, the natural but potent weather event linked to more drought and wildfires in the western United States and more Atlantic hurricanes. It's becoming the nation's unwanted weather guest and meteorologists said the West's megadrought won't go away until La Nina does.

G7 pledges put coal on notice, could boost climate aid

Officials from the Group of Seven wealthy nations announced Friday that they will aim to largely end greenhouse gas emissions from their power sectors by 2035, making it highly unlikely that those countries will burn coal for electricity beyond that date.