Yoko the swell shark was born in a habitat of all-female sharks who hadn't seen a male in years. The aquarium has two possible explanations — and hopes to get confirmation in the coming months.
Environmental advocacy groups are concerned about the Federal Energy Regulatory Commission's decision to forego an in-depth impact study for the proposed Transco natural gas pipeline expansion.
The world's biggest iceberg, known A23a, is on a collision course with a tiny island in the South Atlantic, which is home to millions of seals and nearly half the world's population of king penguins.
In northern California, a group of volunteers spend every night from late fall through winter as crossing guards–escorting migrating salamanders across a rural road.
A Trump executive order temporarily pauses leases and permits for offshore and onshore wind projects. Wind advocates say an offshore wind freeze could threaten states' climate goals and jobs.
Friday's debut of new pandas at the National Zoo in D.C. is the latest chapter in a long tale of "panda diplomacy" between China and the rest of the world.