Hundreds of carp dead in Michigan had herpes, DNR says

The Michigan Department of Natural Resources said it has identified the cause of death of hundreds of fish in Lake Orion.

Future of Lake Tahoe water clarity remains uncertain following Caldor Fire

Scientists say it’s too soon to draw conclusions about the lasting damage that record-setting wildfires will have on Lake Tahoe. But they’re not wasting time. Many are expected to present their research plans to the Tahoe Science Advisory Council.

Climate change could force over 200 million people to move by 2050, report says

Climate change could push more than 200 million people to move within their own countries in the next three decades and create migration hot spots unless urgent action is taken in the coming years to reduce global emissions and bridge the development gap.

Biden to visit Colorado Tuesday to pitch investments in clean energy

President Biden will visit the National Renewable Energy Laboratory in Denver, Colorado, on Tuesday and pitch his $3.5 trillion spending package.

Pink and green: Auroras light up night sky in Tasmania, Alaska

The Southern and Northern lights pulled off spectacular shows in the skies over Tasmania and Alaska earlier this week.

California considering crackdown on fraudulent recycling labels

California lawmakers have approved what advocacy groups say are the nation’s strongest protections against falsely labeling items as recyclable when they in fact are destined for landfills.

Water conservation efforts falling short in the South Bay, residents asked to conserve more

Residents in Santa Clara County are being asked to cut water use even more. New numbers show many cities are struggling to meet the water district’s 15% water conservation goal. Latest data shows water use overall in Santa Clara County fell by 6%.

Heat triggers statewide flex alert for Wednesday

California's grid operator has issued a statewide flex alert for Wednesday 4 p.m. to 9 p.m. due to the extreme heat much of California and the West is experiencing. 

Spare the Air alert extended through Tuesday due to smog and wildfire smoke

The Bay Area Air Quality Management District has extended a Spare the Air alert for smog and an air quality advisory due to wildfire smoke through Tuesday. 

River closes after Northern California family dies while hiking nearby

The mysterious deaths of a Northern California family of hikers and their dog have led federal officials to close 28 miles along the Merced River, where high levels of toxic algae were detected.

Spare the Air alert issued for Sunday as wildfire smoke lingers

As an unholy trinity of high temperatures, tailpipe exhaust and wildfire smoke choke the Bay Area, the air district is issuing a Spare the Air Alert for smog for Sunday.

Lake Huron sinkhole may hold secrets to how Earth got its oxygen

Scientists have discovered a previously unconsidered link between the length of daytime and the oxygen levels on Earth. Their theory was inspired by what they found at the bottom of Lake Huron.

Regional air quality advisories issued for Thursday, Friday due to wildfire smoke

The Bay Area Air Quality Management District has issued air quality advisories for Thursday and Friday because of wildfire smoke, but the levels of pollution are not expected to exceed federal health standards or prompt a Spare the Air alert. 

Wildfires infect Bay Area with poor air quality, Spare the Air alert extended through Sunday

As a result of smoke filled air from wildfires, doctors do recommend staying indoors with windows shut and central air systems on recirculate, but as long as you're not breathing the air for a straight 24 hours, experts say reactions will likely be minimal.

Poor air quality cause for concern at this weekend's Santa Rosa Marathon

Thousands of people are signed up for two days of running in Santa Rosa: 5k and 10k races on Saturday and a half-marathon and full marathon on Sunday. The poor air quality is causing some concern.

Asian giant hornet nest destroyed in Washington state

Officials in Washington state said Thursday they had destroyed the first "murder" hornet nest of the season, which was located near the town of Blaine along the Canadian border.