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Tag Archives: hormones

Explainer: Our bodies’ internal clocks

By Amanda Leigh Mascarelli / June 14, 2013

This illustration shows how light that enters the eyes can send a signal to make sure the body’s master clock is reset daily. This ensures the internal pacemaker is always working in sync with the local time. Credit: Nat.l Inst. of Gen’l Medical Sciences

Biological clocks determine hunger, sleepiness and other daily rhythms

Posted in Body & Health, Brain & Behavior | Tagged biological clock, body clock, circadian, cycles, explainer, hormones, jet lag, light, metabolism, pacemaker, retina, rhythms, Sarah Forbes-Robertson, suprachiasmatic nucleus, Swansea University

Cool Jobs: Delving into dung

By Roberta Kwok / January 23, 2013

Wood’s colleague, Janet Wilmshurst, studies a piece of moa poop. Credit: Jamie Wood

Scientists uncover fascinating secrets through the study of animal feces

Posted in Animals, STEM Careers | Tagged animal navigation, animal reproduction, baboons, beetles, Brazil, Center for Conservation Biology, Cerrado, chemical markers, Chinook salmon, conservation biology, cool jobs, coprolite, Dactylanthus taylorii, diet, digestion, DNA, DNA fingerprint, droppings, dung, ecology, Emily Baird, endocrinology, excretions, feature, feces, fossils, glucocorticoid, Hades flower, hormones, kakapo, killer whale, Landcare Research, Lund University, manure, moa, New Zealand, oceanography, olfaction, orca, paleontology, pollen, Pollination, poo, poop, scat, stress, Tanzania, topstories, University of Washington, Wasser, whiskers

Secret signals

By Roberta Kwok / January 15, 2013

Chemicals called pheromones act as messengers between individuals. Many plants and animals — including squid — respond to such secret chemical signals. Credit: Roger T. Hanlon

Animals respond to chemical messages they may not even realize they’re swapping

Posted in Chemistry | Tagged Adaptation, aphids, bombykol, Butenandt, cephalopod, chemical attractant, chemical communication, chemical messenger, Dendrobium sinense, elephant, emperor moth, fear, feature, honeybee, hormones, Jean-Henri Fabre, Jennifer Brodmann, Lamprey, longfin inshore squid, lure, luteinizing hormone, Manfred Ayasse, Marine Biological Laboratory, Monell Chemical Senses Center, nectar, octopus, orchid, pheromones, pollen, Roger Hanlon, sex attractant, silk moth, squid, topstories, Tristram Wyatt, University of Oxford, University of Ulm, Woods Hole, Wysocki

Losing control over sugar

By Stephen Ornes / March 1, 2012

pop

A common pollutant and sweetener mess with important hormones

Posted in Body & Health | Tagged diabetes, endocrine, Endocrine system, evolution, getinvolved, hormones, insulin, pancreas, systems

Kids now getting ‘adult’ disease

By Emily Sohn / April 24, 2009

More kids are developing diabetes, and obesity is a major reason why.

Posted in Body & Health | Tagged diabetes, endocrine, Endocrine system, hormones, insulin, obesity, pancreas