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The rhythm of everything

By Guest PostJune 21, 2013General, Health, Scienceadolescents, approximately a day, automobile accidents, blood pressure, body temperature, breast cancer rates, brown university, cancer epidemiology, chronic insomnia, chronobiology international, circa diem, circadian cycle, circadian gene, circadian rhythms, clock, DNA, electric lights, epigenetic changes, estrogen level, feedback loop, habitual fatigue, heart rate, human body, jet lag, key issue, kidneys, logic, molecular autoregulatory, mutation, mysterious, natural processes, physiological phenomena, probably carcinogenic, regulatory genes, rhythm of everything. biological changes, richard g stevens, scientists, seasonal affective disorder, transcriptional activators, ultraviolet light, winter blues, yong zhu

Dawn triggers basic biological changes in the waking human body. As the sun rises, so does heart rate, blood pressure and body temperature. The liver, the kidneys and many natural processes also begin shifting from idle into high gear. Then as daylight wanes and darkness descends, these processes likewise begin to subside, returning to their lowest levels again as we sleep.

These internal biological patterns are tightly linked to an external cosmic pattern: the earth’s rotation around the sun once every 24 hours. This endless loop of light and darkness and the corresponding synchrony of internal and external clocks, are called circadian rhythms, from “circa diem,” Latin for “approximately a day.” Circadian rhythms influence almost all living organisms, from bacteria to algae, insects, birds and, as is increasingly understood by science, humans beings. (more…)

Practical Tool Can ‘Take Pulse’ of Blue-Green Algae Status in Lakes

By Guest PostJune 12, 2012Environmentalgal blooms, alum creek, beach managers, blue green algae, buck creek, chlorophyll, cyanobacteria, deer creek, delaware, east fork, eutrophic lakes, feedback loop, fluorometer, gastrointestinal illness, jason marion, jiyoung lee, lake logan, lakes, madison lake, neurological problems, nutrient levels, ohio state, ohio state university, organic pollution, oxygen, ph, phycocyanin, phycocyanin levels, pigment, population growth, public health, secchi disk, septic systems, timothy buckley, toxin, toxin microcystin, urbanization, water resources, WHO

COLUMBUS, Ohio – Scientists have designed a screening tool that provides a fast, easy and relatively inexpensive way to predict levels of a specific toxin in lakes that are prone to blue-green algal blooms.

Blue-green algae is not your average pond scum – rather than consisting of plant-like organisms, blue-green algae actually are cyanobacteria, and some species are linked to the production and release of the toxin microcystin into the water. Human exposure to the toxin through drinking or recreational water contact can threaten public health by causing liver damage, neurological problems and gastrointestinal illness in humans. (more…)

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The rhythm of everything

Practical Tool Can ‘Take Pulse’ of Blue-Green Algae Status in Lakes