Hot times, summer in the city….

Hot times, summer in the city….

by Bill Schlesinger Most studies predicting changes in species distribution with global warming focus on species that may move into areas that are presently too cold for them—for example, the northward expansion of the range of birds on continents and ...
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Wilderness

Wilderness

by Bill Schlesinger "Don’t it always seem to goThat you don’t know what you got ’til it’s gone" Joni Mitchell, Big Yellow Taxi, 1970 Humans have occupied all continents of the Earth since the end of the last ice age, ...
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Legacy Phosphorus

Legacy Phosphorus

by Bill Schlesinger Normally, we think of a legacy as a financial contribution or a policy that has a lasting impact on an institution. Alternatively, we may hear that a youngster applying to a certain college is likely to be ...
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Geoengineering Revisited

Geoengineering Revisited

by Bill Schlesinger Late last month the National Academy of Sciences released a report recommending that the U.S. initiate a $200 million research program to understand the potential for and potential consequences of geoengineering to mitigate the effects of global ...
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Ocean Acidification

Ocean Acidification

by Bill Schlessinger When certain oxidized gases, such as sulfur dioxide (SO2) and nitrogen dioxide (NO2), dissolve in water, they make it acid.  When these gases are emitted as air pollutants, they cause acid rain in the regions downwind of ...
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COVID and Air Pollution

COVID and Air Pollution

  by Bill Schlesinger While periodic shutdowns due to electric blackouts, athletic events, and governmental decrees against air travel have allowed us to ascertain the effect of certain activities on air pollution, the shutdown due to COVID is the first ...
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Cats, revisited

Cats, revisited

the belled beast by Bill Schlesinger I’ve blogged before on the impact of free-ranging domestic cats on wildlife (https://blogs.nicholas.duke.edu/citizenscientist/songbird-its-whats-for-dinner/ ). In China, a new study estimates annual bird mortality from cats at 2.7 to 5.5 billion birds each year. Recent ...
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The Size of Our Nest

The Size of Our Nest

by Bill Schlesinger It is a crowning manifestation of the dominance of Homo sapiens over nature that sometime in the past year, the total mass of materials produced (and in use) by humans—our collective stuff—exceeds the mass of all the ...
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Get Right with Whales

Get Right with Whales

A humpback whale leaping, or breaching, out of the Sea of Cortez (Gulf of California) , Mexico, spraying water as it does so by Bill Schlesinger The Atlantic Northern Right Whale is an endangered species, with (at last count) only ...
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/ / Environment, Sections
The Source of the Yellow River

The Source of the Yellow River

by Bill Schlesinger For years, doctors have used an analysis of urine, including its color, to help recognize and diagnose certain diseases in humans. Similarly, ecosystem scientists can recognize subtle changes in ecosystems by shifts in the chemical composition and ...
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/ / Environment, Sections
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