Articles sur Carbon dioxide

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Felicity Burke/The Conversation

Trees are made of human breath

Urban trees are literally made with the help of human breath – they turn the carbon dioxide we breathe out into the building blocks of plant growth. So your local trees have a piece of you inside them.
For a megacity, Tokyo is rich in trees. gillyberlin/flickr

We calculated how much money trees save for your city

In an increasingly urban world, trees can make a major difference. One study found that, for every dollar invested in planting, megacities saw a $2.50 return on their investment.
Researchers studied reef sands at Heron Island, Hawaii, Bermuda and Tetiaroa. In this photo, white areas show the predominance of sand on reefs. Southern Cross University

Our acid oceans will dissolve coral reef sands within decades

Ocean acidification poses an increasing threat to the sediments that form the framework of coral reefs - within around 30 years, these carbonate sands may no longer be able to form.
Children march at the welcoming ceremony of the Conference of the Parties (COP23) in Bonn, Germany. (UNclimatechange/flickr)

How citizens are fighting climate change on the global stage

As delegates meet in Bonn for the latest rounds of climate talks, civil society, NGOs, cities, regional governments and businesses, are stepping up to work together toward climate goals.
Who will emerge as the leader on climate change following the U.S. withdrawal from the Paris agreement? (AP Photo/Evan Vucci)

Canada has the opportunity to be a climate leader in Bonn

Canada ratified the Paris agreement on climate change, but it hasn't yet filled the leadership void left by the United States. Time is running out.
Carbon dioxide flux over China, measured by NASA’s Orbiting Carbon Observatory-2 satellite. NASA

Satellites are giving us a commanding view of Earth’s carbon cycle

New data from a NASA satellite show in unprecedented detail the flow of carbon dioxide into the atmosphere. Future satellites should even be able to detect the signatures of individual power stations.
The window for staving off the worst of climate change is wider than we thought, but still pretty narrow. Tatiana Grozetskaya/Shutterstock.com

Keeping global warming to 1.5 degrees: really hard, but not impossible

It's still possible to hit the more ambitious of the two Paris global warming goals, according to a new estimate of the global carbon budget. But it sure won't be easy, and we need to start now.

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