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The saguaro cactus extracts carbon from the atmosphere. Thomas Roche / Getty Images

By Paul Brown

It may come as a surprise to realize that a plant struggling for survival in a harsh environment is also doing its bit to save the planet from the threats of the rapidly changing climate. But that's what Mexico's cactuses are managing to do.

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The Svalbard Global Seed Vault in Norway intends to insure against climate disaster. Riccardo Gangale / Flickr

By Tim Radford

London, 15 February, 2021. Bill Gates − yes, that Bill Gates − has for years been financing studies in geo-engineering: he calls it a "Break Glass in Case of Emergency" kind of tool.

But he also says, in a new book, How to Avoid a Climate Disaster: the Solutions We Have and the Breakthroughs We Need, that he has put much more money into the challenge of adapting to and mitigating climate change driven by global heating powered by greenhouse emissions that are a consequence of our dependence on fossil fuels.

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seed.com

You can't discount the importance of your gut health. Research shows that the microbiome within your digestive system has a disproportionate impact on how well your whole body functions.

Unfortunately, bad diets, the overuse of antibiotics, and other stressors mean many of our digestive systems are in trouble. Probiotic supplements claim to solve this problem by replenishing your gut with the healthy bacteria it needs for optimal functioning. Here, we'll analyze the popular probiotic brand Seed to determine whether its supplements are worth taking.

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Researchers on the ICESCAPE mission, funded by NASA, examine melt ponds and their surrounding ice in 2011 to see how changing conditions in the Arctic affect the biological and chemical makeup of the ocean. NASA / Flickr

By Alex Kirby

The temperature of the Arctic matters to the entire world: it helps to keep the global climate fairly cool. Scientists now say that by 2035 there could be an end to Arctic sea ice.

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Global heating imposes a harsh cost at the most critical time of all: the moment of spawning. Pxfuel

By Tim Radford

German scientists now know why so many fish are so vulnerable to ever-warming oceans. Global heating imposes a harsh cost at the most critical time of all: the moment of spawning.

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The deep-sea frogfish floats near the ocean floor. Mikael Kvist / Getty Images

By Tim Radford

Scientists have taken the temperature of the deep seas and found alarming signs of change: ocean warming is prompting many creatures to migrate fast.

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Alley farming at the Center for Urban Agriculture at Fairview Gardens allows for multiple crops to be planted alongside each other, maximizing the most efficient use of land. Citizen of the Planet / Education Images / Universal Images Group / Getty Images

By Tim Radford

Forget about organic farming: get the best out of the best cropland, return the rest to nature and still feed the world. It could work, say researchers.

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Heavy industry on the lower Mississippi helps to create dead zones. AJ Wallace on Unsplash.

Cutting out coal-burning and other sources of nitrogen oxides (NOx) from heavy industry, electricity production and traffic will reduce the size of the world's dead zones along coasts where all fish life is vanishing because of a lack of oxygen.

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Wave power in Portugal. The oceans' energy potential is immense. Luis Ascenso, via Wikimedia Commons

By Paul Brown

The amount of energy generated by tides and waves in the last decade has increased tenfold. Now governments around the world are planning to scale up these ventures to tap into the oceans' vast store of blue energy.

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Students from various institutions take part in a protest in support of the global action against climate changes Friday for Future, in Guwahati, Assam, India on Friday, Nov. 29, 2019. Recently, more than 40 organizations in India have come together to co-operate on climate solutions. David Talukdar / NurPhoto / Getty Images

By Nivedita Khandekar

After decades of concentrating on economic development and insisting that global warming was mainly a problem for the more industrially-developed countries to solve, Indian industry is at last facing up to dangers posed to its own future by climate change.

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A group of schoolchildren gathers under a tree in Ganta, Liberia. Edwin Remsberg / VWPics / Universal Images Group via Getty Images

By Alex Kirby

If you really want to tackle the climate emergency, there's one simple but often forgotten essential: throw your weight behind schools for girls, and ensure adult women can rely on the chance of an education.

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Sea level rise causes water to spill over from the Lafayette River onto Llewellyn Ave in Norfolk, Virginia just after high tide on Aug. 5, 2017. This road floods often, even when there is no rain. Skyler Ballard / Chesapeake Bay Program

By Tim Radford

The Texan city of Houston is about to grow in unexpected ways, thanks to the rising tides. So will Dallas. Real estate agents in Atlanta, Georgia; Denver, Colorado; and Las Vegas, Nevada could expect to do roaring business.

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Charging EVs in Stockholm: But where does a dead battery go? Ranjithsiji / Wikimedia Commons

By Kieran Cooke

Driving an electric-powered vehicle (EV) rather than one reliant on fossil fuels is a key way to tackle climate change and improve air quality — but it does leave the old batteries behind as a nasty residue.

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