Tag Archives: Physics Today

Decoding an asteroid’s magnetic history

Meteorite samples show that metal asteroids exhibited dynamo activity while they solidified from the outside in. Continue reading

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Continental rift exposes mantle melting at work

Changes in the degree of melting of mantle rock explain uplift and subsidence patterns in New Zealand’s Taupo Volcanic Zone. Continue reading

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Black carbon in Antarctica

Spectral and chemical measurements highlight the local effects of pollutants on the albedo of Antarctic snow. Continue reading

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California’s recent weather extremes

A planetary-scale pattern of atmospheric waves may be responsible for California’s droughts and floods. Continue reading

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Sea turtles don’t just go with the flow

Satellite data reveal that the marine reptiles change their behavior to interact with currents. Continue reading

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Separating pebbles from boulders on asteroid Itokawa

Collisions between fragments may lead to size segregation of rock piles during asteroid formation. Continue reading

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Exploring the environmental impact of quantum dots

The speed with which microbes in a simplified ecosystem absorb the nanomaterials is raising concerns about the effect on organisms higher in the food chain. Continue reading

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Using cellular networks to measure air quality

The propagation of microwaves offers an effective, low-cost means of detecting polluted air. Continue reading

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A hard rain’s a-gonna fall

A high-resolution climate model predicts an almost across-the-board increase in extreme precipitation events throughout North America. Continue reading

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Finding the magma source for Mount St Helens

Seismic imaging reveals a cold mantle beneath the volcano and suggests that magma migrates from the east. Continue reading

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