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3,584 results
3,584 results for: assessments
- Ecosystems
Mangrove Might: Nearby trees boost reef-fish numbers
Coastal mangroves give an unexpectedly important boost to reef fish.
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Neural Aging Walks Tall: Aerobic activity fuels elderly brains, minds
Moderate amounts of regular walking improve brain function and attention in formerly sedentary seniors.
- Earth
Night space images show development
Scientists may have come up with a way to use satellite images taken at night to estimate the rate of population growth in fire-prone areas and thereby better assess fire risk to specific groups of residents.
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Toddlers’ Supersize Mistakes: At times, children play with the impossible
Toddlers will sometimes try to climb into a toy car or otherwise treat small objects as if they were large ones, possibly because their brains occasionally fail to integrate visual information about object size with object identity.
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Pot on the Spot: Marijuana’s risks become blurrier
A research review challenges the assumption that scientists have demonstrated a causal link between teenage marijuana use and later psychological and behavioral problems.
- Earth
A Portrait of Pollution: Nation’s fresh water gets a checkup
Virtually all of America's fresh water is tainted with low concentrations of chemical contaminants, according to a new nationwide study.
- Earth
Big Thaw Coming: Climate change may slam Arctic
If the changes in climate predicted for this century come to pass, the people and creatures of the Arctic will face some of the largest challenges.
- Health & Medicine
Green tea takes on poison
Green tea contains a broad range of compounds that detoxify dioxin.
- Health & Medicine
Tackling stroke and heart risks
Lowering cholesterol in diabetes patients lessens their risk of heart attack or stroke, even when their initial cholesterol was in the normal range.
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Watching the biological clock
Biologists now have a way to predict when a woman will start menopause.
- Earth
Sea Change: Carbon dioxide imperils marine ecosystems
Almost half the carbon dioxide produced by human activity in the past 2 centuries is now dissolved in the oceans, resulting in chemical changes that, if unchecked, could threaten some marine ecosystems.
- Health & Medicine
Birthing age and ovarian cancer risk
Giving birth confers on women some protection against ovarian cancer, and the later in life the last pregnancy happens, the better the protection.
