Sea level rise requires extra management to maintain salt marshes

Salt marshes are important habitats for fish and birds and protect coasts under sea level rise against stronger wave attacks. However, salt marshes themselves are much more vulnerable to these global change threats than previously ...

Fear of predators increases risk of illness in prey species

Predators are not only a deadly threat to many animals, they also affect potential prey negatively simply by being nearby. Researchers at Lund University in Sweden have studied what happens to the prey's immune system when ...

Nepal expedition to remeasure height of Everest: Officials

Nepal is sending a team of government-appointed climbers up Mount Everest to remeasure its height, officials said Monday, hoping to quash persistent speculation that the world's tallest mountain has shrunk.

The secret behind maximum plant height—water

Physiological coordination between plant height and xylem hydraulic traits is aligned with habitat water availability across Earth's terrestrial biomes, according to a new study. Ecologists from the South China Botanical ...

Q&A: Designing a better local tsunami warning system

On a Friday afternoon in the spring of 2011, the Tōhoku-Oki earthquake shook northeastern Japan for six minutes and shifted the country's main island by 8 feet. Minutes later, residents began receiving tsunami warnings through ...

It's not so easy to gain the true measure of things

I teach measurement – the quantification of things. Some people think this is the most objective of the sciences; just numbers and observations, or what many people call objective facts.

More glaciers in East Antarctica are waking up

East Antarctica has the potential to reshape coastlines around the world through sea level rise, but scientists have long considered it more stable than its neighbor, West Antarctica. Now, new detailed NASA maps of ice velocity ...

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Height

Height is the measurement of vertical distance, but has two meanings in common use. It can either indicate how "tall" something is, or how "high up" it is. For example "The height of the building is 50 m" or "The height of the airplane is 10,000 m". When used to describe how high something like an airplane or mountain peak is from sea level, height is more often called altitude. Height is measured along the vertical (y) axis between a specified point and another point.

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