15 Dec

Posted at 10:04h in Latest news by
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It has arrived! [video width="1920" height="1080" mp4="https://alpalga.fr/wp-content/uploads/2025/12/bluesky-video-ENG.mp4" loop="true" autoplay="true"][/video] The microscope 🔬 that very likely enabled the first observation of snow algae by Horace-Bénédict de Saussure in 1761 has arrived at the ROUGE COMME NEIGE exhibition at the Grenoble Museum. This microscope once belonged to de Saussure’s...

26 Sep

Posted at 13:15h in Latest news by
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[vc_row css_animation="" row_type="row" use_row_as_full_screen_section="no" type="full_width" angled_section="no" text_align="left" background_image_as_pattern="without_pattern"][vc_column][vc_column_text css=""]First map of red snows in the Alps. By analyzing five years of satellite images, Léon ROUSSEL from the Snow Study Center has created an atlas that allows hikers to check if they have a good chance...

26 Sep

Posted at 13:01h in Latest news by
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[vc_row css_animation="" row_type="row" use_row_as_full_screen_section="no" type="full_width" angled_section="no" text_align="left" background_image_as_pattern="without_pattern"][vc_column][vc_column_text css=""] France Culture. PODCAST Algae blooms, also known as "the blood of glaciers" or "watermelon snow", are present everywhere in mountains and polar circles, but remain poorly understood. A new study reveals that their development depends on the speed...

31 May

Posted at 18:04h in Latest news by
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[vc_row css_animation="" row_type="row" use_row_as_full_screen_section="no" type="full_width" angled_section="no" text_align="left" background_image_as_pattern="without_pattern"][vc_column][vc_column_text css=""]In spring, névés (large areas of melting snow) are frequently dotted with bright red patches. This phenomenon, familiar to hikers, is often confused with the ochre coloration caused by sands carried by Saharan winds. In fact, it's...

31 May

Posted at 10:05h in Latest news by
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[vc_row css_animation="" row_type="row" use_row_as_full_screen_section="no" type="full_width" angled_section="no" text_align="left" background_image_as_pattern="without_pattern"][vc_column][vc_column_text css=""][Film] Step inside a cell of the snow alga Sanguina nivaloides and see how extraordinarily adapted its architecture is to living in the snowpack. The first film shows how state-of-the-art electron microscopy methods (known as FIB-SEM, meaning...

25 Dec

Posted at 10:50h in Latest news by
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[vc_row css_animation="" row_type="row" use_row_as_full_screen_section="no" type="full_width" angled_section="no" text_align="left" background_image_as_pattern="without_pattern"][vc_column][vc_column_text][Reportage Photo] In 1760, Horace Bénédict de Saussure was 20. He describes red snow on the slopes of Mont Brévent (2525m) and observes small red cells under the microscope (Voyage dans les Alpes). Nearly 262 years later (June...

22 Dec

Posted at 18:57h in Latest news by
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[vc_row css_animation="" row_type="row" use_row_as_full_screen_section="no" type="full_width" angled_section="no" text_align="left" background_image_as_pattern="without_pattern"][vc_column][vc_column_text][Photo Report] Aristotle was the first biologist to describe "red snows" in his book "History of Animals" and to consider they were due to living organisms. The only place where he was able to see this phenomenon in...

22 Dec

Posted at 18:55h in Latest news by
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[vc_row css_animation="" row_type="row" use_row_as_full_screen_section="no" type="full_width" angled_section="no" text_align="left" background_image_as_pattern="without_pattern"][vc_column][vc_column_text][Vidéo in French] Launch of a study of Sanguina algae during their natural development in the snow. Researchers from the LPCV and LECA laboratories, with the support of the Jardin du Lautaret, wish to understand the impact of...