How we look kilometers below the Antarctic ice sheet

Antarctica is a vast and dynamic place, but radar technologies — from World War II-era film to state-of-the-art miniaturized sensors — are enabling scientists to observe and understand changes beneath the continent’s ice in unprecedented detail. Join radio glaciologist Dustin Schroeder on a flight high above Antarctica and see how ice-penetrating radar is helping us learn about future sea level rise — and what the melting ice will mean for us all.

When will the next ice age happen? – TED Ed by Lorraine Lisiecki

Throughout Earth’s history, climate has varied greatly. For hundreds of millions of years, the planet had no polar ice caps. Without this ice, the sea level was 70 meters higher. At the other extreme, about 700 million years ago, Earth became almost entirely covered in ice, during an event known as “Snowball Earth.” Continue reading

Highway of riches, road to ruin: Inside the Amazon’s deforestation crisis – Globe and Mail

The fate of the Amazon rainforest has never been as uncertain as it is right now. To understand the forces that are shaping its future, Stephanie Nolen travelled 2,000-kilometres along a dusty, dangerous corridor through a fragile ecosystem on which the world depends Continue reading