
California has by far the most aggressive climate-change policies in the nation, and the state is a global leader in plans to reduce carbon-dioxide emissions. It's also the world's eighth-largest economy, with a growing population, soaring economic output, and a resolutely progressive legislature. While its zero-emission vehicle policies may get...

Anniversaries often provide an opportunity to reflect on important past events, review what has happened since, and reflect upon the future. April 2 of this year marks the 10th anniversary of the Supreme Court ruling in Massachusetts vs EPA in which the EPA was forced to regulate carbon emissions. The passing of this anniversary was marked by an...

On Saturday, tens of thousands of people joined a Science March in Washington, D.C., to support use of data-based science to set government policy on climate change. The day before, the U.S. Environmental Protection Agency removed detailed climate data and scientific information because it appeared to conflict with the "beliefs" of the Trump...

The Trump administration is either having a robust internal debate on its climate positions or floundering incoherently as various interests vie for the president's attention. Its intentions for the Paris Climate Agreement that the U.S. signed last year remain entirely unclear. On Monday, Trump's EPA administrator Scott Pruitt reportedly asked a...

The current EPA administrator, Scott Pruitt, does not accept the scientific consensus on human contribution to climate change, though he has given some contradictory statements on that matter. His views correspond closely to those of his boss, President Donald Trump, who notoriously compared the science to bovine excrement in a tweet and called...

The Industrial Revolution that started around 1750 in England was powered largely by coal. With Watt's invention of the steam engine and the emergence of railways in the mid-nineteenth century, the carbon-dense fuel was central to the change from an agricultural economy to an industrial one. Last Friday, however, marked a watershed moment for...

Economists call them "externalities." They're the costs of people's actions on other people or communities—though the people taking those actions don't have to pay for those costs, even as they harm others. The emissions from combusting fossil fuels to propel vehicles are clearly a prime example. DON'T MISS: A Brief History Of Smog, Which...
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As the Trump Administration nears its 100th day, it seems fair to say that it is still emitting mixed messages on multiple issues, from foreign policy to climate change. On that latter, it's important to reiterate that the president and many of his appointed agency and department heads deny the science of climate change. On the campaign trail, the...

It's mixed news these days for those concerned about continuing manmade climate change. On the one hand, global carbon emissions were flat for the third year in a row, increasing numbers of global corporations have lined up to support climate-change reduction efforts, and electric power is getting cleaner as coal slowly ebbs as a fuel despite the...

The Clean Power Plan’s future looks uncertain at best under President Donald Trump. The commander-in-chief appears to be urging American utility companies to pivot back towards burning coal to produce electricity. Ending the so-called “war on coal” is intended to create jobs in the mining sector, at the expense of the...

Former New York City mayor Michael Bloomberg has gone on record saying publicly what most analysts have discussed privately: the notion that Washington can direct the energy market back towards coal is wrong. In fact, Bloomberg is willing to go further: he believes that the U.S. can still meet the reductions set forth in the Paris climate treaty...
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Following the removal of all mentions of climate change from the White House website, the new administration has apparently trained its sites on the U.S. Environmental Protection Agency. The EPA and a handful of other government agencies are now reportedly under gag orders: employees are forbidden to discuss ongoing changes, post new material on...

The new U.S. administration has made it clear that it does not accept the scientific consensus on climate change. From President Donald Trump down through his nominees for key roles—Scott Pruitt for EPA adminstrator, Rick Perry for Department of Energy head, and others—key elected and appointed officials have rejected the idea of human...

During negotiations for the Paris Climate Treaty signed last fall, a major concern among critics was whether the carbon emissions of China's sprawling and inefficient energy sector could be reined in. With China, the U.S., and dozens of other countries signing the agreement, the world's most populous country committed itself to decarbonizing its...
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If there were any doubt that U.S. policy on climate change would change drastically under President Donald Trump, it should have been laid to rest shortly after noon yesterday. Following inauguration ceremonies for the 45th president of the United States, the Obama White House website was replaced with an entirely new site for the Trump White...

Despite scientists having reached a consensus years ago, considerable debate still appears to be raging over the reality of climate change. Climate-science deniers can count several people appointed to key environmental-regulatory positions in the incoming presidential administration among their ranks. Despite their views, it is impossible to deny...

Cars that run entirely or partly on electricity from a battery pack have no tailpipe emissions, but to judge their overall impact, you have to look at lifetime wells-to-wheels emissions. That includes emissions associated with extracting, refining, and burning the fuel used to make the electricity that recharges them, as well as the same for any...
The world must act fast to reduce carbon intensity of electricity or risk failing to meet global climate goals. The greenness of electric cars depends on it. Continue reading →