Male Sierran treefrogs, or "chorus frogs," change their breeding calls depending on the temperature, a UC Davis study found. Credit must be given to the creator. Only noncommercial uses of the work ...

It’s hard to go far in San Diego County without stumbling upon a place to hike. I should know; through the San Diego Union-Tribune’s Hike of the Week column, I have explored 101 hikes in this region ...

LONDON (AP) — Russian opposition leader Alexei Navalny was poisoned by the Kremlin with a rare and lethal toxin found in the skin of poison dart frogs, five European countries said Saturday. The ...

Precise, deniable and, in Russia’s case, grimly familiar. Poison has become less a medieval cliché than a geopolitical signature flourish in recent years. Accusations of Russian poisoning surfaced ...

Russian opposition leader Alexei Navalny died in prison after being poisoned with a deadly toxin found in Ecuadorian dart frogs, the U.K. and other allies claimed Saturday. There is no possible ...

Dollar Tree is turning over a new, slightly more luxurious leaf. The discount retailer is opening up shop in more affluent neighborhoods in an effort to draw out the nation’s biggest spenders. Nearly ...

Russian opposition leader Alexei Navalny speaks to the media in front of security officers standing guard at the Foundation for Fighting Corruption office in Moscow, Russia, Thursday, Dec. 26, 2019.

The modern poison has become less a medieval cliché than a geopolitical signature flourish. Precise, deniable, and in Russia’s case, grimly familiar. Accusations of Russian poisoning surfaced again ...

LONDON — Russian opposition leader Alexei Navalny was poisoned by the Kremlin with a rare and lethal toxin found in the skin of poison dart frogs, five European countries said Saturday. The foreign ...

A San Diego Police cruiser in Southcrest. (Photo by Adrian Childress/Times of San Diego) Violent crime in San Diego dropped last year, mirroring a national trend, but with one major exception. Major ...

(FOX 5/KUSI) — The first of two strong Pacific storms this week began battering Southern California on Monday, generating downpours and gusty winds, along with high surf along the coast. The storm ...

San Diego elected officials are condemning what they call harassment and hate targeting Somali child care providers, following online allegations of widespread fraud that local leaders say are false.