The area known as "Tornado Alley" now includes more parts of Texas than it once did, according to scientists, who believe climate change could be the reason.

John Nielsen-Gammon, Texas state climatologist and professor of atmospheric sciences at Texas A&M, said although the blame cannot be pinned entirely on climate change, studies have shown warmer climate is a key ingredient for severe weather.

Gammon pointed out a particular combination of events can cause thunderstorms, snow and wildfires, if it happens at the right time of year.

"If you have an intense frontal system moving across northern Texas, you'll automatically get very strong winds, dry air moving from west to east," Gammon noted. "And if it's early enough in the severe weather season, then the air north of that can potentially be cold enough to allow snow."

This unusual weather mix last happened in 2009. This week, the threat of severe weather continues.

Gammon explained a "supercell" thunderstorm, causing large amounts of high wind, is the first warning of a tornado. When cold air mixes with warmer air and gets sucked back into the storm, a funnel will form.

As the alley best suited to tornadoes shifts further to the east, he emphasized Texas can expect larger outbreaks of tornadoes.

"The tendency for them to occur more in the southeastern United States and less in the former Tornado Alley, Texas sort of spans both of those," Gammon remarked. "East Texas is sort of part of the southeast, with the Piney Woods and so forth, and north Texas is part of Tornado Alley."

Conducting less in-person storm chasing, scientists can now anticipate areas where tornadoes may develop. As storm-tracking technology improves, officials are also able to give people earlier warning, and homes are being built to better withstand severe weather, which helps decrease fatalities.

Vic Cornell, director of administration for the Texas Campaign for the Environment, said Texans should rethink their dependence on drilling for oil, because the drilling process creates the types of gases that change air temperature.

"If we leave oil in the ground and stop burning oil, coal, liquefied natural gas, and turn to more renewable sources, the big picture of climate change will slow or stop," Cornell contended.

He urged people to be more aware of how their day-to-day actions can affect climate change.

The Environmental Protection Agency now has fewer tools to fight climate change, after the U.S. Supreme Court stripped the agency of its authority to regulate greenhouse-gas emissions from existing power plants.

The Court's 6-3 ruling along party lines involves the 2015 Clean Power Plan. The majority ruled it is unlawful for federal agencies to make "major" decisions without clear authorization from Congress.

Jayson O'Neill, director of the Western Values Project, predicted existing laws in both "blue" and "red" states that go further than federal laws to protect air quality could be eliminated.

"Our government's ability to protect us from corporate pollution, including climate emissions, is nearly wiped out," O'Neill stressed. "Our future's in question."

Sen. Martin Heinrich, D-N.M., called the court's decision a "major step backwards" at a time when hydrocarbons are fueling more destructive wildfires, reducing snowpack and contributing to the state's worst drought in 1,200 years.

Thursday marked the end of the high court's current term, which also saw explosive rulings on abortion and guns.

In handing down its ruling in the EPA case, the court invoked the "major questions" doctrine, a decision which could affect the federal government's authority to regulate in other areas, including the internet and worker safety.

Andres Restrepo, senior attorney for the Sierra Club, believes the ruling is dangerous.

"It really is something that has the risk of metastasizing in a way that could really hinder the government's ability to keep us safe," Restrepo cautioned.

O'Neill expects to see a flood of lawsuits by corporations challenging federal rules protecting human health and the environment.

"Put another feather in the hat that corporations have essentially more rights than individuals," O'Neill contended. "And that they would be able to challenge laws that protect individual health and win those cases, for their profits."

The court's ruling does recognize the EPA's authority and responsibility to limit climate pollution from cars and trucks, oil and gas development and industrial sites.

California has seen a lot of proposals to reduce carbon emissions; now a plan to scrub existing pollution is moving forward in the Legislature.

Assembly Bill 2649, which just passed the State Senate Environmental Quality Committee on Wednesday, sets a big goal: to remove 60 million metric tons of carbon from the atmosphere per year by 2030, all by harnessing nature.

Ellie Cohen, CEO of the Climate Center, a statewide advocacy group, said the plan to sequester more carbon in the ground will slow climate change and help the environment.

"It helps us to hold more water when it does rain," Cohen outlined. "It helps to replenish groundwater. It supports biodiversity, it supports food security, it helps ensure cleaner air, to get many, many co-benefits that help us to be more resilient."

Plants naturally remove carbon from the atmosphere using photosynthesis. Under the plan, the state would supercharge the effect by helping farmers spread compost on their fields and range lands, by restoring vegetation alongside streams, and by encouraging what's known as "blue carbon" by restoring coastal wetlands.

Asm. Cristina Garcia, D-Bell Gardens, a co-author of the bill, is especially enthusiastic about efforts to plant more trees in urban areas.

"So the trees would allow us to capture carbon, would help reduce the heat," Garcia explained. "But would also be a sound barrier, would also help capture pollution from all the trucks and cars."

At Wednesday's hearing, the Farm Bureau expressed opposition, saying the bill could present a burden to farmers and growers. The bill has already passed the state Assembly and now goes to the Senate Appropriations Committee in August.

Support for this reporting was provided by The Pew Charitable Trusts.

Members of Nevada's African American community say they're channeling the spirit of Juneteenth to fight for environmental justice.

Church-affiliated groups in Las Vegas hold monthly trainings on ways to fight climate change, promoting programs to make solar panels and electric appliances more affordable. The Rev. Leonard Jackson, director of the Faith Organizing Alliance in Nevada, said it's important that low-income Nevadans benefit from big projects, such as the electric vehicle-charging network.

"We want to make sure," he said, "that it is the underserved individuals that live in these communities, that they're the ones that receive the jobs, as far as installing this equipment, as far as maintaining this equipment."

He pointed out that communities of color often suffer the most from the effects of extreme heat and drought linked to climate change, as urban neighborhoods become heat islands, choked by air pollution from cars and trucks. So, Jackson welcomes efforts to subsidize electric vehicles and put more electric buses on the streets.

Utility companies offer programs to weatherize homes, help people use less water and switch from gas to electric appliances. But Dr. Mary House, chief executive of the Las Vegas faith-based nonprofit CHR Inc., said they need to spread the word at community events.

"People don't even understand these programs and the benefits of them. because they're not going into our community," she said. "Who's going to walk them through the steps? We don't see any of that being done."

Heather McTeer Toney, vice president for community engagement at the Environmental Defense Fund, said the African American community embodies resilience.

"We can link systemic problems of race and poverty to not only environmental concerns," she said, "but also how communities have both thrived and overcome in a number of those areas."

Almeta E. Cooper, national manager for health equity with the group Moms Clean Air Force, encourages Nevadans to get involved.

"We have many projects that, once an individual connects with us, we can empower you to go further," she said, "to connect with your elected officials, to tell them what you need in your community."