reach
-
Biology
Plant hormones that help roots reach deeper water offer potential strategy for drought-tolerant crops
Images of watering (left) and water stress (right) – showing changes in root angle to make the building steeper. Credit: University of Nottingham Scientists have discovered how plants adapt their root systems under drought conditions, growing rapidly into the soil to access deeper reservoirs. Plant scientists at the University of Nottingham, in collaboration with Shanghai Jiao Tong University, are investigating…
Read More » -
Environment
World fails to reach drought agreement in Saudi-sponsored talks
COP16 delegates walk past a giant poster of Saudi Arabian ruins at the start of the UNCCD talks. Participants said Saturday that negotiators at Saudi-hosted United Nations talks were unable to reach an agreement on how to respond to the drought, falling short of an expected binding drought protocol. . The 12-day Conference of the Parties to the United Nations…
Read More » -
Space & Cosmos
How did the building blocks of life reach Earth? Zinc fingerprints in meteorites provide clues
An iron meteorite from the core of a molten planetesimal (left) and a chondrite meteorite from a “primitive” unmolten planetesimal (right). Credit: Rayssa Martins/Ross Findlay Researchers used the chemical fingerprint of zinc in meteorites to determine the origin of volatile elements on Earth. The results suggest that without the “unmolten” asteroids, there may not have been enough of these compounds…
Read More » -
Science
Nuclear rockets may reach Mars in half the time, but designing the reactors to power them is not easy
Nuclear-powered rockets may one day enable faster space travel. Credit: NASA NASA plans to send a crewed mission to Mars over the next decade, but the 140 million mile (225 million kilometer) journey there could take months or years round trip. This relatively long flight time is a result of the use of conventional chemical rocket fuel. The agency is…
Read More »
