Biological adaptation is the evolutionary process through which heritable traits that enhance an organism’s fitness become more prevalent in a population over generations under specific environmental conditions. It operates primarily via natural selection acting on genetic variation, including mutations, recombination, and gene flow, and is constrained by developmental, genetic, and phylogenetic factors. Adaptations can be morphological, physiological, or behavioral and are typically characterized by increased survival or reproductive success in a given niche. The process is dynamic and context-dependent, such that traits advantageous in one environment may be neutral or deleterious in another, contributing to diversification and speciation.
A new study sheds light on how the ancestors of modern land plants survived one of the most challenging aspects of life outside water: exposure to harmful ultraviolet (UV) radiation. By examining a microscopic alga closely ...
Evolution
Jun 28, 2026
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Baboons are one of the most widespread of Africa's primate groups. They range across sub-Saharan Africa and into the Arabian Peninsula. Baboons' ability to spread across such a vast geographic area is based on their great ...
Plants & Animals
Jun 27, 2026
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Aotearoa New Zealand whitebait can rapidly switch their life cycles in response to sudden environmental changes, new University of Otago—Ōtākou Whakaihu Waka research shows. The research is published in the journal Nature ...
Evolution
Jun 26, 2026
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When we think of bees, we often think of flowers. The more flowers, the better, right? Well, not exactly. Like us, bees need to consume specific nutrients in suitable amounts and combinations.
Plants & Animals
Jun 26, 2026
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In remote Australia, First Nations communities battle extreme heat each summer. In January 2026 alone, the town of Alice Springs (Mparntwe) endured 20 days of temperatures above 40°C (104°F). This prolonged heat wave—defined ...
Environment
Jun 25, 2026
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Natural hallucinogens, such as psilocybin, mescaline, N,N-dimethyltryptamine (DMT) and related compounds, have generally received attention for their effects on human perception, emotion and cognition. Recently, interest ...
Evolution
Jun 25, 2026
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When an animal's environment changes faster than the animal can adapt, its chances of survival can flatline. The same is true for populations and even entire species. Now, scientists at MIT and the University of Leicester ...
Evolution
Jun 24, 2026
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Researchers at the University of East Anglia have helped uncover a hidden ally in the fight against one of agriculture's greatest threats—salty soil. Led by Chinese collaborator Dr. Yanfen Zheng, the team's new study shows ...
Cell & Microbiology
Jun 24, 2026
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10
In many fish species, water temperature determines the sex of the fry. This biological mechanism threatens to wipe out entire populations because of a shortage of females in the face of global warming. However, an international ...
Plants & Animals
Jun 23, 2026
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9
Some insects and microbes develop symbiotic partnerships that become so interdependent they can no longer survive without each other. But how specific are these heritable symbioses? Is it possible for the same species of ...
Ecology
Jun 23, 2026
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