Cornell scientists have created an evolutionary model that connects organisms living in today's oxygen-rich atmosphere to a time, billions of years ago, when Earth's atmosphere had little oxygen—by analyzing ribonucleotide reductases (RNRs), a family of proteins used by all free-living organisms and many viruses to repair and replicate DNA.
Alain Aspect, who won a long-expected Nobel Physics Prize on Tuesday, not only helped prove the strange theory of quantum entanglement but also inspired a generation of physicists in his native France, according to former students and colleagues.
Gene banks worldwide make an important contribution to the conservation of biological diversity. In the Federal Ex situ Gene Bank at the IPK Leibniz Institute alone, more than 150,000 old varieties are preserved. In addition to negative traits, old and exotic varieties possess many valuable gene variants that have been lost in modern varieties but may be crucial for plant production in the future. But how can this hidden treasure of valuable biodiversity be tapped for agriculture?