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In the mid-2030s, every U.S. coast will experience rapidly increasing high-tide floods, when a lunar cycle will amplify rising sea levels caused by climate change.

High-tide floods – also called nuisance floods or sunny day floods – are already a familiar problem in many cities on the U.S. Atlantic and Gulf coasts. The National Oceanic and Atmospheric Administration (NOAA) reported a total of more than 600 such floods in 2019. Starting in the mid-2030s, however, the alignment of rising sea levels with a lunar cycle will cause coastal cities all around the U.S. to begin a decade of dramatic increases in flood numbers, according to the first study that takes into account all known oceanic and astronomical causes for floods.

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If the melting power cables in Portland, Oregon, weren't enough of an indication, new satellite data confirms what many sweat-drenched Americans could have guessed: June 2021 was the single hottest June on record in North America.

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As a result of harsh drought conditions in California in 2021, the U.S. Energy Information Administration expects the state’s hydroelectric generation to be lower in 2021 than it has been in recent years.

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Yesterday, the U.S. Department of Energy (DOE) announced $52.5 million to fund 31 projects to advance next-generation clean hydrogen technologies and support DOE’s recently announced Hydrogen Energy Earthshot initiative. The first Earthshot, Hydrogen Shot, which was launched one month ago, seeks to reduce the cost of clean hydrogen by 80% to $1 per 1 kilogram in 1 decade (1 1 1).

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Forests absorb huge amounts of carbon dioxide (CO2) from Earth's atmosphere, making them a key part of mitigating climate change. But humans may have already rendered the world's largest rainforest useless in — and perhaps even detrimental to — the battle against greenhouse gases, a new study finds.

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Earth is said to be in a perfect "Goldilocks zone" away from the sun (not too cold, and not too hot), which enables life to thrive on the planet's surface. But Earth's balmy temperatures would not be possible without the greenhouse effect, which traps solar energy on Earth's surface and keeps the planet warm.

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Countries around the world are taking steps to tackle climate change and become net-zero emitters of carbon dioxide (CO₂) by 2050. Most recently, Joe Biden’s presidential election win means the US is the latest nation to adopt the goal.

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In 2020, consumption of renewable energy in the United States grew for the fifth year in a row, reaching a record high of 11.6 quadrillion British thermal units (Btu), or 12% of total U.S. energy consumption. Renewable energy was the only source of U.S. energy consumption that increased in 2020 from 2019; fossil fuel and nuclear consumption declined. Our U.S. renewable energy consumption by source and sector chart (above, larger version here) shows how much renewable energy by source each sector consumes.

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Last year, average fuel economy for light-duty vehicles hit a new high, while the pandemic reduced time on the road, fuel consumption, and emissions. These short-term reductions have spurred efforts to cement even greater long-term fuel efficiency gains and emissions reductions for gasoline-powered vehicles, which are likely to make up the majority of the U.S. automotive market for years to come. At the same time, to meet delivery demands from surges in online ordering by quarantined Americans, freight trucks have regained activity and diesel consumption levels even higher than those seen prior to the pandemic.

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Cellulosic ethanol—produced from fibrous cellulose, which gives plants strength and rigidity—offers a range of attractive benefits. When used as a vehicle fuel, it can support deep reductions in greenhouse gas emissions, with a carbon footprint 73% smaller than conventional gasoline. Ethanol made from cellulose can be sourced from widely available crops, like corn stover or switchgrass, that are adapted to grow in a wide range of climates. Not least, it can support clean energy jobs and economic opportunity in rural communities.

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