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Read More in Sierra Magazine

It's a farewell to arms for California sea stars.
Zoom in on a subsurface blizzard in polar waters and you'll find that each flake is a winged, lentil-size snail with a translucent shell, a creature that seems to have sprung straight from Hieronymus Bosch's "Garden of Earthly Delights."
How far would you swim to get the shot?
Drones could be a boon for conservation--but first, they need to overcome their stigma
What our readers have to say . . .
On the one hand: Climate change is depleting the ozone layer, so you need sunscreen to protect yourself from UV rays. On the other: Chemicals from washed-off sunscreen are damaging aquatic ecosystems.
The fearsome European hamster is described by BBC Wildlife as "somewhat laddish" and "bolshy in temperament" (i.e., macho and aggressive). It's also too tasty for it's own good.
Uh oh: A giant hornet with a bad temper that can fly at 25 miles per hour and is attracted to the smell of sweat--or fear.