CRISPR gene scissors, as new tools of molecular biology, have their origin in an ancient bacterial immune system. But once a virus attack has been successfully overcome, the cell has to recover ...

关于行星在星周盘中形成的正则理论提出，行星最初是由小得多的种子长成的。长期考虑的替代理论提出，巨大的原行星可由引力不稳定引起的巨大旋臂的坍塌碎片直接形成——如果星周盘引力不稳定的话。

Jörn Piel's research focuses on the origin, ecology, and activity of natural products. Using biological and chemical methods, his research group investigates how organisms such as bacterial ...

Italy is to close all shops except food stores and pharmacies in Europe's toughest lockdown yet as virus deaths and cases continue to mount. Prime Minister Giuseppe Conte said bars, restaurants ...

The coronavirus outbreak has been labelled a pandemic by the World Health Organization (WHO). WHO chief Dr Tedros Adhanom Ghebreyesus said the number of cases outside China had increased 13-fold ...

Friedrich Kekule’s discovery of the shape of benzene ring, Mendeleyev’s conceptualization of the Periodic Table, and Loewi’s experiments on the transmission of nervous signals through ...

Here’s one example: Friedrich August Kekule was a German chemist in the 1860s who was trying to work out the molecular structure of benzene—an important endeavor for the petrochemical industry.

that there was a lack of clearness in the notions of most ch em i sts about the stru ctu re of organ ic compounds—for Kekule had not yet made his famous ride on the top of the Clapham omnibus ...

Researchers at the Technical University of Munich (TUM) have developed an artificial motor at the supramolecular level that can develop impressive power. This wind-up motor is a tiny ribbon made of ...

This year we celebrate the 150 th anniversary of Mendeleev’s achievement in formulating the structure of the periodic table that we use today. He announced his structure in 1869, but the challenge of ...

The mid-nineteenth century saw the development of a radical new direction in chemistry: instead of simply analyzing existing molecules, chemists began to synthesize them—including molecules that ...