Thermogenesis is the biological process by which organisms generate heat through metabolic reactions, contributing to the maintenance of body temperature and energy homeostasis. It encompasses obligatory thermogenesis, arising from basal metabolic processes and digestion, and adaptive or facultative thermogenesis, which is induced by environmental or nutritional stimuli such as cold exposure or overfeeding. Key mechanisms include mitochondrial uncoupling, particularly via uncoupling protein 1 (UCP1) in brown and beige adipose tissue, shivering in skeletal muscle, and futile substrate cycles. Thermogenesis is tightly regulated by the sympathetic nervous system and endocrine signals, especially thyroid hormones and catecholamines.
Honeybees do not like cold weather. When temperatures dip, they can become sluggish and unable to fly. But no matter the conditions in the outside world, they try to keep their hives close to a comfortable 34°C–36°C (93°F–97°F). ...
Sealed within an eggshell, how can chicks prepare for the world into which they are about to hatch, with no obvious direct communication channel across the shell? Adult zebra finches produce distinctive high-pitched warning ...
Plants & Animals
Jun 11, 2026
0
13
In a new study, Northwestern University scientists explored how snow flies—small, wingless insects that crawl across snow to find mates and lay eggs—survive in freezing cold temperatures. They discovered this snow-dwelling ...
Plants & Animals
Mar 24, 2026
0
14
Researchers at the Terasaki Institute for Biomedical Innovation have developed a novel nanoparticle-based therapy for obesity treatment, as reported in a recent study published in ACS Nano. The innovative approach targets ...
Bio & Medicine
Oct 29, 2024
0
61
