There’s no final battle scene in conservation. No singular villain to defeat, no final victory for the hero. Scientists know that understanding nature requires humility and a willingness to revise ...

Advances in organ and computer models are raising the prospect that some animal experiments could be eliminated. But there are still huge hurdles to overcome.

That moment when a 2,000-pound bison decides your car needs a closer inspection, and you’re suddenly eye-to-eye with an ...