West Nile virus-infected mosquitoes detected in Sunnyvale, treatment scheduled

Mosquitoes infected with the West Nile virus have been detected in a portion of Sunnyvale, officials with Santa Clara County say. As a result, a mosquito control treatment is scheduled for Friday night. 

Meet Sherman, the Bay Area’s viral tortoise
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Meet Sherman, the viral tortoise taking the Bay Area by storm. The 11-year-old Sulcata has flown through SFO, ridden BART and explored local businesses, and now he’s stopping by KTVU with his dad, Wilson Tsai. Find out what makes this 55-pound explorer such a social media star.

These US beaches are home to some of America's most venomous snakes

Beachgoers may be watching for rip currents, rough surf or even sharks, but snakes aren’t the first thing that comes to mind when heading to the beach.

New tiny wild cat species discovered in Bolivia’s cloud forests

Researchers have identified Leopardus tilcayo, a previously unknown species of tiny wild cat, in Bolivia’s cloud forests, marking the first formal description of a new living cat species in more than a century.

10,000-year-old mastodon tooth found in this Bay Area creek

A recent routine field survey in the Bay Area led to a rare and stunning prehistoric discovery of an intact tooth from the ice age.

Tahoe bear deaths: Mama bear tried to get her dead cub up, drag it off the road, witnesses say

Six bears have died on Tahoe roads in the last two weeks, a local non-profit said. In one case, a mama bear was seen trying to get her dead cub up and drag her baby off the road, witnesses recalled.

Watch: Mystery animal attacks man in New Hampshire parking lot

A mystery animal attacked a man in a Lebanon, New Hampshire, parking lot, surveillance video released by police shows.

Pacifica planning commissioner among 2 boaters found dead in Tomales Bay

Friends, neighbors and city officials are mourning the loss of 37-year-old Alexander Ferguson, who was identified by the Marin County Coroner as one of two boaters found dead in Tomales Bay over the weekend.

Science behind Grand Canyon floods
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The Grand Canyon is one of the nation’s most visited natural wonders, but this week’s disaster is a stark reminder that extreme weather can transform its landscape in a matter of minutes. Victor Baker, regents' professor of Hydrology and Atmospheric Sciences, at University of Arizona, gives insight.

Peekachu, rescued beluga whale at Shedd Aquarium, dies suddenly

Peekachu, one of eight beluga whales recently rescued from a closed Canadian marine park and brought to Chicago's Shedd Aquarium, died suddenly Tuesday evening.

Man busted after customs uncovers bizarre cargo hidden inside 22 pairs of socks

A man was arrested at a Tokyo airport after authorities discovered about 200 lizards stuffed inside 22 pairs of socks in his suitcase, according to reports.

New details shed light on Jackie the bald eagle's final days, unanswered questions

Newly released details from wildlife officials reveal the medical timeline, key treatments, and legal protocols surrounding the death of Big Bear's famous bald eagle, Jackie.

Bear safety this summer
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It's been a busy summer for Lake Tahoe but not just for people, for the bears, as well. South Lake Tahoe police say there's been an increase of bear calls, so far, this year. Alexia Ronning, CDFW Environmental Scientist and Tahoe bear specialist, gives insight.