Is Illinois the Next Bald Eagle Watching Spot?

 Once seasonal migrants, the iconic birds of prey are settling in the state.
Two Sumatran tigers

Mating at the Zoo Can Be Dangerous

A Sumatran tiger killed the female he was meant to mate with. Mating endangered species in captivity has long been a problem, if not always to such dramatic effect.
Source: https://commons.wikimedia.org/wiki/File:Argonauta_argo_Merculiano.jpg

Paper Nautilus, Octopus of the Open Sea

Why the argonaut, or paper nautilus, may be your new favorite cephalopod.
Replica of a Denisovan molar, originally found in Denisova Cave in 2000

Denisovans and Neanderthals Interbred in a Giant Cave

New findings shed light on how humans' ancestors interbred, but the Denisovans remain quite mysterious.

Scientists Are Putting Mosquitoes on Human Diet Drugs

Humans and mosquitoes share a surprising amount of genes and have similar hunger controls.
A tarsier

Can Wildlife Adapt to Heat Waves?

Heatwaves have led to widespread deaths of animals like big-eyed tarsiers and flying foxes. Is there hope for species like this as temperatures rise?
Two wolves

The Totally Unromantic Origin of Monogamy

Evolutionary biology offers theories as to why some mammals engage in monogamy. And no, it's not because they're in love. (Sorry.)

Love, Sex, and Cyanide—The Private Life of a Toxic Butterfly

Heliconian butterflies choose mates with similar wing patterns. Their genes make them do it.
Wild coffee

Protecting Food’s Wild Relatives

The wild ancestors of coffee and other vital crops are at risk, leaving much of the world's food supply vulnerable to catastrophe.

Buzzing In at the “Bee & Bee”

City gardens and hotel rooftops can serve as refuges—and food corridors—for the troubled species.