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Articles on Satellite imaging

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Modern computing allows to spot isolated trees and shrubs in semi-arid areas, facilitating research on the evolution of vegetation cover. Martin Brandt

How we mapped billions of trees in West Africa using satellites, supercomputers and AI

Advanced techniques allowed our research team to build an open database of billions of individual trees and challenge some common perceptions about vegetation in arid and semi-arid zones.
Mangroves, like these in Madagascar, provide a range of benefits, including protection from storms and the prevention of coastal erosion. (Louise Jasper/Blue Ventures)

New mangrove forest mapping tool puts conservation in reach of coastal communities

Despite their enormous value, mangroves are being removed at an alarming rate. A new tool aims to help communities reverse mangrove loss and tap into conservation programs and funding.
NASA’s James Webb telescope mirror undergoing cryogenic testing. Ball Aerospace/Flickr

Six space missions to look forward to in 2021

India may land on the Moon this coming year, while Nasa will launch its new, powerful rocket farther into space than any other human rated spacecraft.
The Caban Coch dam, in Wales’ Elan Valley, is just one of the estimated 1.2 million river barriers in Europe. Sara Barrento/Nature

Europe’s natural waterways: death by a million cuts

New research published in the journal Nature reveals that more than 1.2 million flow barriers exist on European rivers and that approximately 10% are obsolete.
Use the slider tool in the images below to see before and after NASA satellite images of Australia’s fire and drought effects. NASA

‘This crisis has been unfolding for years’: 4 photos of Australia from space, before and after the bushfires

We pulled four before-and-after NASA satellite images and asked bushfire researcher Grant Williamson to reflect on the story they tell.
A section of Beijing Daxing International Airport from the first 3D images released by China National Space Administration using data from the recently launched Gaofen-7 Earth observation satellite, which can resolve objects less than a metre wide. China National Space Administration/Xinhua

As Digital Earth gains momentum, China is setting the pace

China has embraced the concept of Digital Earth – the use of data from satellites to create a visual map of what's happening at every point on the planet – and is now a key player in making it happen.
The electromagnetic spectrum we can access with current technologies is completely occupied. This means experts have to think of creative ways to meet our rocketing demands for data. NASA Johnson/Flickr

We’re using lasers and toaster-sized satellites to beam information faster through space

Free space optical communication will allow the same connectivity in space we already have on Earth. And this will provide benefits across a number of sectors.
A woman cries inside her flooded house in Huarmay, a coastal region of Peru, which in 2017 saw its worst flooding in 20 years. Ernesto Arias/EPA

Three times more people at risk from yearly coastal flooding than previously thought – new research

Hundreds of millions more people will now be at risk from rising seas in the coming decades - with Asia and island nations most vulnerable. How we react to the climate crisis is now even more crucial.

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