Diatoms between 0.01 and 0.02 mm, consisting of a single cell surrounded by an artificially colored silica skeleton. The alga in green is present in clean environments, while the orange one lives in more polluted water.
Credit: Laure Apothéloz-Perret-Gentil, UNIGE
Diatoms...
Jay Zarnetske explores river icings in Alaska in 2004. A new study by Zarnetske shows river icings are melting out, on average, 26 days earlier in the year than in 2000.
Credit: Jay Zarnetske
Climate change is causing thick ice deposits...
Calving of a glacier.
Credit: © hakat / Fotolia
Studies of bones from Ice Age megafaunal animals across Eurasia and the Americas have revealed that major increases in environmental moisture occurred just before many species suddenly became extinct around 11-15,000 years...
The western U.S. has seen a 2-degrees-Celsius rise in annual average temperature and lengthening of the fire season by almost three months since the 1970s; both elements contribute to what the authors refer to as the "new era of...
A close-up view of the ice-walled canyon at the terminus of the Kaskawulsh Glacier, with recently collapsed ice blocks. This canyon now carries almost all meltwater from the toe of the glacier down the Kaskawulsh Valley and toward the...
This is a drone image -- thawing permafrost peat plateaus in northern Norway.
Credit: Sebastian Westermann
Global warming will thaw about 20% more permafrost than previously thought, scientists have warned -- potentially releasing significant amounts of greenhouse gases into the Earth's...
Dr. Itay Halevy of the Weizmann Institute of Science has looked to the distant past -- all the way back to Earth's earliest oceans. The model he developed, together with Dr. Aviv Bachan of Stanford University, suggests that the...
Lake Monona, in Madison, Wis. is experiencing rising salinity due to nearby roadways and road salt application.
Credit: Hilary Dugan
North America's freshwater lakes are getting saltier due to development and exposure to road salt. A study of 371 lakes published...
This study is the first to link income inequality and carbon emissions within and across the individual U.S. states.
Credit: © andranik123 / Fotolia
Across the U.S., state-level carbon emissions are higher in states where income is more highly concentrated among...
The fragment of the metamorphic rock eclogite in which the garnet that encased the ferric-iron-rich majorite sample was found in Northern China.
Credit: Courtesy of Yingwei Fei
Recovered minerals that originated in the deep mantle can give scientists a rare glimpse...
Lake Iffig (Iffigensee) above Lenk in the Bernese Oberland. The analysis of sediment cores allowed for the local vegetation history to be reconstructed.
Credit: Christoph Schwörer
The people in Switzerland were on the move in the High Alps and running alpine...
