Want to make some coin raising rabbits? Get yourself an island. Or not, if you want to protect the existing ecosystem.

Gaps in the forest canopy can reveal important information, and result in regeneration.

Artificial light has a huge variety of harmful effects on ecosystems. Scientists are exploring ways to mitigate the damage.

They may look like random puddles, but some states are building million-dollar tunnels to direct wildlife to these seasonal refuges.

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?

Fish intelligence? Yes, many studies have documented the ability of fish to learn from their environment. Fish exposed to a more complicated environment have an edge in learning.

Sometimes different but related species can reproduce. When two different species successfully mate, the resulting offspring is called a hybrid.

Cities can host surprisingly diverse bird species, apart from the ubiquitous pigeons and sparrows. Where do they go in the winter?

The southern resident killer whales of the northeast Pacific are in trouble. As habitats and food dwindle, they increasingly miscarry and lose their babies.

Will cutting fewer forests, where tick hosts and their predators live, help curb Lyme disease? Scientists debate.