Cleaning products are all around, from the liquid dish soap used to wash your dishes to the glass cleaner sprayed on your windows to give them a streak-free shine. In your battle to ward off dirt and grime, you may have made things worse. According to the U.S. Environmental Protection Agency, indoor air is at least two to three times more polluted than the air outside. This is due to volatile organic compounds that evaporate from cleaning products used in the home. Most conventional cleaning products are petroleum-based and pose hazardous risks on our health. There are plenty of natural “green” cleaners that can keep a house clean and smelling fresh without the toxic side effects.
Sourced from PNAS and World Science staff
It’s well known that some species of birds lay their eggs in other species’ nests, to force others to raise their offspring.
Now, researchers have identified a new low in the behavior of some of these “parasite” birds: they retaliate mafia-style against those that reject their imposition, by ransacking their nests.