23/03/2017

How chewing like a cow helped early mammals thrive

You probably haven't given much thought to how you chew, but the jaw structure and mechanics of almost all modern mammals may have something to do with why we're here today. In a new paper published this week in Scientific ...

Stress may protect—at least in bacteria

Antibiotics harm bacteria and stress them. Trimethoprim (TMP), an antibiotic, inhibits the growth of the bacterium Escherichia coli and induces a stress response. This response also protects the bacterium from subsequent ...

Climate change and an 'overlooked' nutrient: silica

Among ecologists, carbon gets all the glory. Scientists examine its critical role in plant growth and decay, they chart its contributions to greenhouse gases, and they measure its sequestration in earth, sea, and sky.

New tools to study the origin of embryonic stem cells

Researchers at Karolinska Institutet have identified cell surface markers specific for the very earliest stem cells in the human embryo. These cells are thought to possess great potential for replacing damaged tissue but ...

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