Around 11:30 a.m. or so, you might find yourself hankering for lunch. The reason for this is that our biological rhythms are trained to tell ourselves when we are hungry, and when we do get that ...

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Most animals sync their body clocks to the daily rhythm of the sun, but what happens during the polar winter when the sun never rises above the horizon? According to a study by Jonathan Cohen at the ...

New research finds that Arctic krill have a biological response to changes in light. When it is lightest in the Arctic polar night, usually around the middle of the day known as midday twilight, the ...

During Arctic winter, the sun disappears below the horizon for long weeks of “polar night.” But new research shows that tiny crustaceans in the Arctic Ocean somehow maintain their daily rhythms during ...

Most animals sync their body clocks to the daily rhythm of the sun, but what happens during the polar winter when the sun never rises above the horizon? According to a new study, arctic krill can ...