Negative-emissions technologies - that remove carbon dioxide from the air and in some cases, even turn it into something new - are powerful tools in the fight against climate change. In our latest Knowledge article we look at some of the most innovative approaches. Read on

Two young American ecopreneurs are developing the world's first ever farm for growing coral on dry land - up to 50 times faster than conventional methods. Read on

Plan A is a unique online platform that uses open source data to predict where and how climate change will hit the hardest - and then uses that insight to help fund innovators who are working on effective solutions in those specific areas. Read on

Returning to a pre-industrial era before we started burning coal to try and avert climate change might sound like the stuff of dreams for some environmentalists. Now researchers in Australia have come up with a method of "undoing" emissions by turning them back into coal. Read on

Many of the inventions that we use in modern society were born from "failure", discovered accidentally, while somebody was busy trying to create something else. That's how we ended up with the microwave and penicillin. And that's also how HiperIn was created, a brand new type of material that could reduce the environmental impact of the construction industry. Read on

A Portuguese airline is aiming to be the first carrier in the world to become single-use plastic free by the end of this year. It's a positive step - although a miniscule one - in a hugely polluting industry. Read on

At the COP24 climate conference in Katowice, Poland this month, decision-makers from around the world came together to draw up concrete guidelines for achieving the Paris Agreement. And while there was success on that front, for now at least, the spirit of the Paris Agreement seems to have run out of steam. Read on

Having dominated the high seas for centuries, the humble sail could be making a return - although not quite as you remember it. Read on

A company in Chile has developed a bag that dissolves in water within five minutes. Could this mean the end of the billions of plastic packages that end up in our seas every year? Read on