Most arctic ice at North Pole has vanished, warns polar explorer

photo: explorer Robert SwanMost of the ice around the North Pole has vanished, warns leading polar explorer

Robert Swan on an expedition (2041 Foundation)

Robert Swan, the first person to walk to both the North and South poles, tells i about the dramatic changes he has seen to the polar icescape in the past three decades

Thirty years ago the explorer Robert Swan walked 700 kilometres (435 miles) across Arctic sea ice in a 56-day springtime trek to the North Pole. Today, that ice is mostly water, … [more…]

Eelgrass wasting disease has new enemies: Drones and artificial intelligence

photo: underwater eelgrass

When infected with eelgrass wasting disease, blades of eelgrass develop black and brown splotches (‘lesions’) that can spread and kill the blade. Credit: Olivia Graham/Cornell University

Every year, the world loses an estimated 7 percent of its seagrasses. While the reasons are manifold, one culprit has long confounded scientists: eelgrass wasting disease.

This September a team of biologists is zeroing in on the problem, in the first study of the … [more…]