Most of the United States’ major climate regulations are underpinned by one important document: It’s called the endangerment finding, and it concludes that greenhouse gas emissions are a threat to human health and welfare.

The Trump administration is vowing to eliminate it.

Environmental Protection Agency Administrator Lee...Read more

SAN DIEGO — The U.S. Environmental Protection Agency will not reconsider its denial to investigate whether the Tijuana River Estuary qualifies as a Superfund site, a designation given to the most contaminated places in the country needing long-term cleanup.

In a Friday letter to Imperial Beach Mayor Paloma Aguirre, Cheree Peterson, acting ...Read more

In mountain ranges around the world, glaciers are melting as global temperatures rise. Europe’s Alps and Pyrenees lost 40% of their glacier volume from 2000 to 2023. These and other icy regions have provided freshwater for people living downstream for centuries – almost 2 billion people rely on glaciers today. But as glaciers melt faster,...Read more

Nvidia Corp., looking to cement its place at the heart of the artificial intelligence boom, laid out plans for more powerful chips, a model for robotics, and “personal AI supercomputers” that will let developers work on desktop machines.

Speaking at the company’s annual GTC event in San Jose, California, Chief Executive Officer Jensen ...Read more

Two heavyweight arch rivals in the world of Bay Area workforce-management startups are locked in a legal battle with one accusing the other of planting a spy within its ranks, and claiming in a federal lawsuit filed Monday that it caught the alleged mole after baiting its rival with a trap.

When the alleged corporate spy was handed a court ...Read more

This week I want to talk about troubleshooting your own tech problems.

I received this email a few days ago, “For the last few days, my iPad, which has worked well in the past on my home Wi-Fi provided by Frontier, has started bouncing from connected to not connected to the internet. It does it within seconds. While on Facebook it will ...Read more

A big thing about our portable charging devices is that they get hot. It's not good for you, and it's most likely not good for the charging device. That's what caught my interest with Aukey's new MagFusion Pro line of portable wireless chargers with active cooling. Their mission is to bring the most innovative mobile accessories to the ...Read more

LOS ANGELES — The risk of damaging flooding from a major tsunami may be greater than many realized along stretches of California’s renowned coastline, state officials say, further reinforcing the need for residents to take note if they live in or visit hazard areas.

The most recent risk assessment, outlined in maps that were published by ...Read more

CHICAGO — Switching to stricter California-style limits on truck emissions would prevent 500 deaths per year in the greater Chicago region by 2050, according to a new study from Northwestern University.

The study also found that 600 new childhood asthma cases would be prevented each year by 2050, and that neighborhoods with higher percentages...Read more

The two Boeing Starliner astronauts left behind on the International Space Station are back on Earth, ending an odyssey that turned a planned eight-day trip into more than nine months in space.

NASA astronauts Butch Wilmore and Suni Williams, who arrived aboard Starliner as part of its Crew Flight Test last June, returned home instead in a ...Read more

BOSTON — The first North Atlantic right whale mom and calf duo of the season were spotted in Cape Cod Bay heading into spring, the Center for Coastal Studies announced.

“The first sighting of mother/calf pairs in Cape Cod Bay each season is always an exciting moment that brings hope for the species,” said Daniel Palacios, the Center’s ...Read more

Last summer, investors persuaded the founders of cyber startup Wiz to turn down Google’s $23 billion takeover offer. They feared the U.S. government would block the deal and argued that Wiz was better off as an independent company.

On Tuesday, Wiz’s founders said they’d changed their minds.

It didn’t hurt that Google parent Alphabet ...Read more

The two Boeing Starliner astronauts left behind on the International Space Station are back on Earth, ending an odyssey that turned a planned eight-day trip into more than 9 1/2 months in space.

NASA astronauts Butch Wilmore and Suni Williams, who arrived aboard Starliner as part of its Crew Flight Test last June, returned home instead in a ...Read more

Two mountain lion cubs have been photographed in Michigan, a state where the big cats were hunted to near extinction and their young haven’t been seen in the wild in over 100 years.

The Michigan Department of Natural Resources announced in a news release March 13 that two cubs between 7 and 9 weeks old were spotted in the state’s rural ...Read more

While SpaceX was busy Tuesday bringing astronauts home on one coast of Florida, it managed to send up a rocket from the other.

A Falcon 9 carrying 23 Starlink satellites lifted off at 3:57 p.m. Eastern time from Cape Canaveral Space Force Station’s Space Launch Complex 40.

The first-stage booster for the mission flew for the 19th time and ...Read more

LOS ANGELES — California lawmakers are proposing legislation that aims to reestablish safeguards for the state’s streams and wetlands in response to a Supreme Court ruling limiting federal clean water regulations.

Supporters say the legislation has taken on heightened urgency as the Trump administration begins to scale back protections for ...Read more

The pair of Boeing Starliner astronauts left behind on the International Space Station are finally on their way back to Earth after a planned eight-day trip turned into more than 9 1/2 months in space.

NASA astronauts Butch Wilmore and Suni Williams, who arrived aboard Starliner as part of its Crew Flight Test last June, began their trip home ...Read more

ATLANTA — Cicadas, those loud, large but harmless insects, will soon emerge this spring after 17 years underground in Georgia.

This brood, called Brood XIV, will begin their first mating season since 2008, invading northeast Georgia and 13 other eastern states.

But these bugs won’t be nearly as noisy or as numerous as last year’s “...Read more