All we have to decide is what to do with the time that is given us.
- JRR Tolkien
Qiusheng Wu, University of Tennessee Traditionally, access to satellite data has been limited to researchers and professionals with expertise in remote sensing and image processing.
However, the increasing availability of open-access data from government satellites such as Landsat and Sentinel, and free cloud-computing resources such as Amazon Web Services, Google Earth Engine and Microsoft Planetary Computer, have made it possible for just about anyone to gain insight into environmental changes underway. I work with geospatial big data as a professor. Here’s a quick tour of where you can find satellite images, plus some free, fairly simple tools that anyone can use to create time-lapse animations from satellite images. For example, state and urban planners – or people considering a new home – can watch over time how rivers have moved, construction crept into wildland areas or a coastline eroded.
As the world continues to warm, the thawing permafrost is releasing organic matter that has been frozen for millennia, including bacteria and viruses – some that can still reproduce.
The Internet is anything but immaterial, as all those messages, images, and videos live in data centres, which consume immense amounts of energy.
In an age of climate chaos and economic crisis, Herman Daly's ideas that inspired a movement to live within our means are increasingly essential.
As world leaders assemble for the United Nations climate change conference, it’s hard to be optimistic towards any radical change in global carbon emissions.
Pakistan is experiencing the most devastating and widespread floods in its history, with the country’s climate minister saying waters have reached across a third of the nation.
For generations of Himalayan enthusiasts, Indian photographer Ashok Dilwali's images are a critical record of one of Earth's most renowned ranges, and a changing landscape
Support local communities, protect the natural environment, and conserve wildlife… all whilst leaving behind a minimal footprint.