When we take medications, we sometimes excrete chemicals that get flushed into our oceans. In the case of fluoxetine (Prozac), those chemicals seem to be chilling crabs out -- which is bad for the crabs.
China has long bought waste plastic for recycling from North America and Europe, but their policies are changing. What can we do with a surplus of waste, and how can we make the situation better in the future?
A recent study found that bug biomass has been steadily decreasing -- in some areas, we may only have 25% of the insects that we had 30 years ago. But what's to blame, and what could this mean for the future?