To lure pollinators, the South African flower Ceropegia sandersonii has a very unusual trick: it impersonates the odor of honeybees in distress. The plant attracts hungry flies by using some of the same chemicals found in bee alarm pheromones, scientists reported today in the journal Current Biology.
As the American Southwest grows hotter, the risk of severe, long-lasting megadroughts rises, passing 90 percent likelihood by the end of the century if greenhouse gas emissions continue at their current pace, a new study says. If we aggressively reduce emissions, however, we can cut that risk substantially, the authors write.
There's a moment in Maya Burhanpurkar's documentary where she stands next to an ice fjord in Ilulissat, Greenland, realizing what climate change means for the people who live there. After listening to residents describe how fast the ice is melting, the 14-year-old student from Ontario, Canada looks into the camera and says: “I think that I'm going to become a lot more conscientious of the environment when I go about my everyday life because after what I've seen today, the icebergs and now the ice fjord, I really don't want that natural landscape to be destroyed. Every single person counts.”
Automating forestry is an uphill battle. Trees grow well on slopes and steep inclines, which are difficult for farming equipment, adapted as it is to sweeping, gentle plains. This is especially hard for the replanting part of responsible forestry, where seedlings need deliberate, tender care so they can begin to replace their fallen predecessors. This is, right now, a human intensive process, but startup DroneSeed wants to turn over the entire process to, you guessed it, drones.