Feeding pigeons birdseed in the park can be fun, but having these birds settle into your yard may be less appealing. For starters, their droppings contain uric acid, which can damage cars, roofs, and other surfaces over time. And because pigeons are non-migratory and tend to stay in one area year-round, they may repeatedly feed on garden seeds and seedlings. For bird lovers, the cooing and pretty color may be a boon. But if you prefer to keep these birds out of your garden and yard, we have expert-backed strategies to help.

That level of regeneration may be out of the question for humans right now, but at the University of Nevada, Las Vegas (UNLV), one lab team is researching the possibility of animal eye regeneration, and how that might impact human eyecare.

Awareness itself may predate our universe.