Killert T-cell surrounds cancer in targeted attack

On a mission to search and destroy cancer, an immune system T-cell launches its attack on a tumour cell in a new time-lapse movie.

Pulsating coral puffs up to escape sandy burial

Not all corals are couch potatoes. When faced with live burial, this nomadic mushroom variety can swell up to cast off sediment, reaching up to five times its resting size.