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A (light green) bacterial cell detects a source of stress and becomes activated (dark green). It then produces alarmones (depicted as red triangles) and can transmit them to neighboring cells via cell-to-cell contact (black arrows). As the source of stress arrives, the percentage of activated cells increases, converting unstressed neighboring cells and triggering the stress response mechanism.

Bacteria’s Secret ‘Alarm System’ Against Antibiotics Uncovered

Categories Life & Non-humans

Artist's impression of a white hole.

The Mystery of White Holes: Could They Solve the Enigma of Dark Matter?

Categories Physics & Mathematics, Space

elite asian woman runner

New Math Model Reveals Optimal Strategies for Elite Runners

Categories Health, Physics & Mathematics

Digital reconstruction of the rampart network from the northern section of the Khaybar walled oasis 4,000 years ago.

Discovery of immense fortifications dating back 4,000 years in north-western Arabia

Categories Social Sciences

Quantum vacuum fluctuations, conceptual illustration.

Exploring vacuum energy

Categories Physics & Mathematics

(C) Joshua Resnick /Stock.adobe.com

Cryptocurrencies beyond the buzz

Categories Social Sciences, Technology

Dry toilet in Charles Léopold Mayer Foundation for Human Progress, in Paris.

A review of how wealthy societies dispose of their excrement

Categories Social Sciences

The Banque de France (French national bank) releases GDP growth projections for France, Germany and the Eurozone (December 2019).

Is the concept of GDP compatible with the envirnmental transition?

Categories Earth, Energy & Environment, Social Sciences

Singapore skyline at night

Sea level rise poses particular risk for Asian megacities

Categories Earth, Energy & Environment

Crystals generate electricity from heat

Categories Earth, Energy & Environment, Technology

A first molar from a Neanderthal, analysed for this study.

Meat good: Neanderthals appear to have been carnivores

Categories Life & Non-humans

Representation of the modes of locomotion practiced by Sahelanthropus. Bipedalism was common among the earliest known representatives of the humankind, probably on the ground but also in trees. It coexisted with other types of movement in a tree environment, including quadrupedal movement using firm hand grips, clearly differing from that of gorillas and chimpanzees who use the back of their phalanges for support ("knuckle walking").

Oldest representative of humanity was bipedal on land, in trees

Categories Life & Non-humans

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