Opportunity From Ashes The introduction of non-native pine trees decades ago has created a wildfire problem in Patagonia today, Guido Bilbao reports for National Geographic. Forest fires aren't always bad for nature, though. As Carrie Arnold reported for Quanta, fires can create opportunities for diverse plants and animals, forming a patchwork quilt of ecosystems in a single forest. You Won't Feel a Thing Asteroid-mass black holes could be roving our solar system, waiting to collide with Earth. But don't worry, says Matt O'Dowd for PBS Space Time: A black hole so small would pass through Earth "like a bullet through cotton candy." Some physicists suspect that the 80% of the matter in the universe that's unaccounted for could be tiny primordial black holes, as Stephen Hawking first proposed. In 2020, Joshua Sokol wrote about this theory for Quanta. | |