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The lichen Xanthoria elegans can continue to photosynthesize at −24 °C.
The lichen Xanthoria elegans can continue to photosynthesize at −24 °C.
Snow surface with snow algae Chlamydomonas nivalis.
Snow surface with snow algae Chlamydomonas nivalis.
Psychrophilic algae can tolerate cold temperatures, like this Chlamydomonas green algae growing on snow in Antarctica.
Psychrophilic algae can tolerate cold temperatures, like this Chlamydomonas green algae growing on snow in Antarctica.
Antarctic diatom algae covering the underwater surface of broken sea ice in the Ross Sea.
Antarctic diatom algae covering the underwater surface of broken sea ice in the Ross Sea.
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The bright colors of Grand Prismatic Spring, Yellowstone National Park, are produced by thermophiles, a type of extremophile.
The bright colors of Grand Prismatic Spring, Yellowstone National Park, are produced by thermophiles, a type of extremophile.
Diversity of extreme environments on Earth
Diversity of extreme environments on Earth
Microscopic image from the hypersaline Lake Tyrrell (salinity> 20% w/v), in which the eukaryotic chlorophyte, Dunaliella salina, can be tentatively id
Microscopic image from the hypersaline Lake Tyrrell (salinity> 20% w/v), in which the eukaryotic chlorophyte, Dunaliella salina, can be tentatively identified. Dunaliella salina is grown commercially for the carotenoid, β-carotene, which is widely used as a natural food colorant as well as a precursor to vitamin A. Alongside is the haloarchaeon, Haloquadratum walsbyi, which has flat square-shaped cells with gas vesicles that allow flotation to the surface, most likely to acquire oxygen.
This is a before and after picture of a cleanup project of the Little Conemaugh River. Photo Credit: Rosebud Mining Company.
This is a before and after picture of a cleanup project of the Little Conemaugh River. Photo Credit: Rosebud Mining Company.