Although one popular theory encourages parents to build their child's immune system by having germs around to challenge young kids, researchers in Sweden argue that this strategy doesn't actually work at all.
In our modern world, we're surrounded by artificial light 24/7. From the glow of our smartphones to the bright hues of LED bulbs, we're bathed in more light than ever before - especially light on the blue end of the spectrum.
We wanted to remind you about seven common spots where bacteria are not just visitors; they're thriving locals, places you might never suspect are hotbeds for microbial life.