Algae in the Andes 

Algae in the Andes 

The Operational Land Imager (OLI) on the Landsat 8 satellite captured this image of an algal bloom on Lake Villarrica in Chile on May 2, 2023. Ground-based observations and analysis of additional satellite images suggest that cyanobacteria make up the light blue-green swirls in the natural-color image. 

Oceans In Hot Water  

Oceans In Hot Water  

Adding to the grim list of record ice losses, record air temperatures and record droughts, which have all hit the headlines recently, the temperature of the surface waters of our oceans is also at an all-time high.

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April Issue 2026