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MONARCHS IN WINTER  Declines in the numbers of monarch butterflies crowding into winter refuges in Mexico (shown) raise the question of what’s going on the rest of the year.  ~~ Pablo Leautaud/Flickr (CC BY-NC 2.0)

MONARCHS IN WINTER Declines in the numbers of monarch butterflies crowding into winter refuges in Mexico (shown) raise the question of what’s going on the rest of the year. ~~ Pablo Leautaud/Flickr (CC BY-NC 2.0)

Scientists have identified a genetic switch that helps grasses regulate their carbon dioxide intake.

Genetic switch offers clue to why grasses are survival masters

Scientists have identified a genetic switch that helps grasses regulate their carbon dioxide intake.

colonies of velvet spiders ~~ BernardDUPONT/flickr/(CC BY-SA 2.0)

One bold, misinformed spider slows a colony’s ability to learn

colonies of velvet spiders ~~ BernardDUPONT/flickr/(CC BY-SA 2.0)

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@EBernsteinWSJ in Miami, FL: Like men everywhere “@ScienceNews: To attract ladies, male bustards throw heads back and run:

One fish, two fish: California’s tidewater goby is two species.

California’s goby is actually two different fish

One fish, two fish: California’s tidewater goby is two species.

When this image was taken in 2003, the reindeer population on Russia’s Taimyr Peninsula numbered more than 800,000, down from 1 million animals in 2000. Now, there are only 600,000 reindeer, scientists say. ~~ Leonid Kolpashchikov

World’s largest reindeer population may fall victim to climate change

When this image was taken in 2003, the reindeer population on Russia’s Taimyr Peninsula numbered more than 800,000, down from 1 million animals in 2000. Now, there are only 600,000 reindeer, scientists say. ~~ Leonid Kolpashchikov

A South African chameleon species can shoot its tongue with up to 41,000 watts of power per kilogram of muscle involved, a new study finds.

Chameleon tongue power underestimated

A South African chameleon species can shoot its tongue with up to 41,000 watts of power per kilogram of muscle involved, a new study finds.

Humanos são ‘programados’ para serem preguiçosos, sugere estudo - BBC Brasil

Humanos são ‘programados’ para serem preguiçosos, sugere estudo

Humanos são ‘programados’ para serem preguiçosos, sugere estudo - BBC Brasil

TIPPING POINT  A new record of the Antarctic ice sheet’s formation suggests that carbon dioxide levels in the atmosphere could soon reach a tipping point that will make the ice sheet more vulnerable to melting. That includes ice in East Antarctica, such as Matusevich Glacier (shown). ~~ NASA Goddard Space Flight Center

Antarctic history suggests ice sheet ‘danger’ threshold

TIPPING POINT A new record of the Antarctic ice sheet’s formation suggests that carbon dioxide levels in the atmosphere could soon reach a tipping point that will make the ice sheet more vulnerable to melting. That includes ice in East Antarctica, such as Matusevich Glacier (shown). ~~ NASA Goddard Space Flight Center

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