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A climate change protest orchestrated by the Extinction Rebellion activist group briefly blocked Eighth Avenue in New York on Saturday afternoon, between the Port Authority transit hub and the home of the New York Times.

A major warm spell has caused nearly half the surface of the Greenland ice sheet to start melting, something that’s highly unusual for this time of year. And while this spike may pass, the gears could already be in motion for record-setting melt on the ice sheet’s western flank.

Toxic chemicals, anthrax - even nuclear waste - could be unleashed by global warming

Prime Minister Justin Trudeau says his government will ban single-use plastics — which could include bags, straws and cutlery — in Canada in 2021 at the earliest. "We need to cover all of Canada with this decision and that's why the federal government is moving forward on a science-based approach to establishing which harmful single-use plastics we will be eliminating as of 2021," said Trudeau during a stop Monday at the Gault Nature Reserve in Mont St-Hilaire, just outside Montreal.

A new report says that human action is driving one million plant and animal species to extinction. But it’s not just any human action: it’s the choices of a tiny minority of wealthy and powerful people.

Sydney, the largest city in a country acutely vulnerable to global warming, moved on Friday to declare a climate emergency, joining hundreds of local governments around the world in calling for urgent steps to combat the crisis, some in the face of inaction by national politicians.

New research shows just how much global warming is eating away at the glaciers on the world’s highest peaks

The case for action to tackle the climate emergency, on a scale far beyond anything that has yet been attempted, is increasingly widely understood. Almost three decades after the first UN climate treaty was agreed in Rio de Janeiro in 1992, and despite the commitments thrashed out among nation states at every summit since, global carbon emissions last year rose to a record 37.1bn tonnes.

Faced with growing calls for action on the climate crisis, aerospace companies gathering for the Paris air show next week are turning their thoughts to a future run on electricity rather than fossil fuels. The scale of the challenge is considerable. The target for net zero carbon emissions by 2050, recommended by the Intergovernmental Panel on Climate Change and embraced by the UK this week, coincides with the expectation that the number of flights will double in the next 20 years.

The Caribbean Sea bordering Grand Cayman’s Seven Mile Beach is a startling aquamarine color. Over 1,500 miles away, the Atlantic Ocean next to Coney Island is a dark bluish-green. And Bondi blue, the color of the original iMac computer, was named after the teal hue of the Tasman Sea off the coast of the eponymous Sydney beach.

"We are living climate change right now."

New left-leaning government sets ambitious target as it plans major rise in public spending

Corporate America is increasingly calling for a federal price on carbon, writes Anne Kelly of Ceres. Private sector commitments could encourage ambitious government policies.

Human-caused climate change and air pollution remain major global-scale problems and are both due mostly to fossil fuel burning. Mitigation efforts for both of these problems should be undertaken concurrently in order to maximize effectiveness. Such efforts can be accomplished largely with currently available low-carbon and carbon-free alternative energy sources like nuclear power and renewables, as well as energy efficiency improvements.

In this week's issue of our environment newsletter, we examine the climate strikes happening around the world, trees as a carbon capture "technology" and reader suggestions on sustainable living.

A lawsuit by a group of young people who say U.S. energy policies are causing climate change and hurting their future faces a major hurdle Tuesday as lawyers for the Trump administration argue to stop the case from moving forward.

Climate change is poised to increase the spread of dengue fever, which is common in parts of the world with warmer climates like Brazil and India, a new study warns. Worldwide each year, there are 100 million cases of dengue infections severe enough to cause symptoms, which may include fever, debilitating joint pain and internal bleeding. There are an estimated 10,000 deaths from dengue — also nicknamed breakbone fever — which is transmitted by Aedes mosquitoes that also spread Zika and chikungunya.

Toxic chemicals, anthrax - even nuclear waste - could be unleashed by global warming

New research using sediment cores suggests human-driven climate change is having a significant impact on the composition of the world’s marine plankton. A German study, published in the journal Nature, reveals that modern communities of foraminifera, a type of hard-shelled plankton, differ markedly from those from the pre-industrial era, which began just 170 years ago.

Paleobotanist Scott Wing stands in wintry Wyoming badlands, where alligators swam 56 million years ago.

In what environmental experts warned could be President Donald Trump's most dangerous assault on science yet, the White House is reportedly moving to end long-term assessments of the impacts of the climate crisis while pushing a polluter-friendly agenda that is making the planetary emergency worse.

As a wave of public consciousness concerning the environment sweeps across Europe, African cities are hoping this will translate into greater equality when it comes to fighting climate change. One of those people calling for a fairer fight is the mayor of Accra, in Ghana.

Pope Francis has declared a global “climate emergency”, warning of the dangers of global heating and that a failure to act urgently to reduce greenhouse gases would be “a brutal act of injustice toward the poor and future generations”.

The science, however, is clear — getting us to net zero will require a role for all technologies and saying otherwise is simply another form of climate denial.

Some species of squids, crabs and octopuses may be losing their vision in Earth's oxygen-starved oceans.

During the last round of debates in 2016, presidential hopefuls spent a whopping 5 minutes and 27 seconds talking about climate change. That’s less than they discussed the national debt. You'd think people, especially politicians, would be more interested in the single most pressing issue of our time—one that touches everything from public health to the economy to immigration to trade to the food we eat and the water we drink and the air we...

Maybe you’ve read King Lear and remember this famous line: “‘Tis the time’s plague when madmen lead the blind.” The words were written more than 400 years ago as a comment on the deadly consequences of greed, delusion and political folly, but they could serve just as well as a Republican party slogan today. They’re a fitting description of the Republican party’s delusional campaign to deny the environmental crises that threaten our planet and our civilization.

One guess as to how the president will respond.

The state has just had its warmest spring on record, causing permafrost to thaw and dramatically reshaping some areas

During extreme storms, ocean waves can be more than 20 metres high, or as tall as a five-storey building. More than being just a product of our weather systems, waves are critical for ocean shipping, the stability of beaches, coastal inundation or flooding and determining the design of coastal and offshore structures.

Glaciers are set to disappear completely from almost half of World Heritage sites if business-as-usual emissions continue, according to the first-ever global study of World Heritage glaciers. The sites are home to some of the world's most iconic glaciers, such as the Grosser Aletschgletscher in the Swiss Alps, Khumbu Glacier in the Himalayas and Greenland's Jakobshavn Isbrae.

Coal began firing US homes and factories in the 1880s. A century later, the cheap, plentiful fuel was America’s primary one (pdf) for electricity generation. But its long reign is slowly coming to an end. In April, renewables eclipsed coal generation in the US for the first time. The Energy Information Administration estimates renewables outperformed coal by 16% in April and will generate 1.4% more in May.

Permafrost in some areas of the Canadian Arctic is thawing so fast that it's gulping up the equipment left there to study it.

When future generations look back on the global-warming scare of the past 30 years, nothing will shock them more than the extent to which the official temperature records – on which the entire panic ultimately rested – were systematically “adjusted” to show the Earth as having warmed much more than the actual data justified.