Five dead after rare tornado hits Czech Republic

A rare tornado tore through several Czech villages and towns, killing at least five people and injuring dozens, rescuers said Friday as they cleaned up the wreckage in the storm's aftermath one official described as a "living ...

How plant hormones control root growth

Plant roots can grow without limit. To do so, they need to balance the production of new cells via cell division and elongation. Plant hormones known as brassinosteroids play a key role in this balancing act. New work by ...

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