21/08/2018

Where will future migrants come from?

In times of desperation—after a hurricane flattens a community, for example, or droughts cause widespread hunger—people inevitably search for better lives and better opportunities elsewhere. In some cases, migrants may ...

In eastern US, adult trees adapt and acclimate to local climate

Trees growing in temperate forests in the eastern US show strong adaptation or acclimation to local climate. So reports a new study that analyzed more than 23,000 tree cores to investigate how adult trees respond to changes ...

Protein interaction helps Yersinia cause disease

Researchers at Umeå University, Sweden, in collaboration with an international team, have discovered a new mechanism for interaction between two proteins that are vital for the Yersinia pseudotuberculosis bacteria's pathogenic ...

Image: Hubble's treasure chest of galaxies

Galaxies abound in this spectacular Hubble image; spiral arms swirl in all colors and orientations, and fuzzy ellipticals can be seen speckled across the frame as softly glowing smudges on the sky. Each visible speck of a ...

Ecosystems are getting greener in the Arctic

In recent decades, scientists have noted a surge in Arctic plant growth as a symptom of climate change. But without observations showing exactly when and where vegetation has bloomed as the world's coldest areas warm, it's ...

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