The tit-for-tat measures announced by India and Pakistan resemble a classic prisoner’s dilemma, where each side views escalatory retaliation as rational — even necessary — despite mutual harm.

India has said it would suspend crucial treaty governing river flows in disputed Kashmir. Pakistan has said any disruption to ...

The Chel Snakehead fish, thought to be extinct, has made a dramatic comeback to the eastern Himalayan ecosystem after more ...

Rescuers in Danvers worked to save an Atlantic white-sided dolphin stranded at low tide in the Waters River mudflats, using blankets and water to protect it.