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Tag: "arid" at biology news

Scientists find fossil proof of Egypt's ancient climate

...ke. Their analyses support a surprising picture of arid Egypt: 130,000 years ago, what everyone considers an eternal desert was actually a thriving savannah, complete with humans, rhinos, giraffes and other wild life. Evidence for the hominin presence abounds near the lake in the form of Middle Stone Age...

Robot-based system developed at Carnegie Mellon detects life in Chile's Atacama desert

...on with a more humid climate and an interior, very arid region less hospitable to life. "We saw very clea...ch a high proportion of the bacteria from the most arid site are pigmented ?red, yellow or pink ?as they grow in the laboratory, according to Minkley. The ...

Small species back-up giant marsupial climate change extinction claim

... ecological data shows that it became increasingly arid during the late Pleistocene, which led to the disappearance of woodland and scrubland and expansion of grassland. To verify their results carbon dating was performed on samples. And further work, due to be published later in the year, on other sites...

Life detection instrument passes key test on road to Mars

...OA) they'd built could detect life in that crusty, arid land, then it would have a good chance some day of detecting life on the planet Mars. In a place that hadn't seen a blade of grass or a bug for ages, and contending with dust and temperature extremes that left her either freezing or sweating, Skelle...

Corn grain mould used as pesticide

... by the mould aspergillus flavus. It grows in hot, arid regions, in the south-west of the US and in many regions of Africa and Asia. In Third World countries, particularly, this dangerous paintbrush-shaped mould is ubiquitous. This may be one reason for the high rate of liver cancer in Africa. "Our collea...

Sahara's edge studied from ground, air and space to improve water management

...ibrate satellite imagery with reality on the sandy arid ground ?as well as seeing what can be learnt about the water beneath it. The Sahara has altered through the ages: during the last Ice Age, 10 000 years ago, there was savannah here with rivers, lakes and plentiful rains. That landscape has vanished...

Wild meerkats school their young

...s live in groups of three to 40 individuals in the arid regions of southern Africa. Each group includes a dominant male and female who produce over 80% of the pups. However, helpers (meerkats older than 90 days) and parents of both sexes aid in rearing the young. Pups (meerkats younger than 90 days o...

Asia's odd-ball antelope gets collared

...on on movements of saigas across this dazzling but arid landscape so that a more comprehensive conservation strategy can be developed to assure the persistence of this little known species" said WCS research scientist Kim Berger, a co-director of the study. Saigas still occur in pockets of Uzbekistan, Tur...

China's environmental challenges

...opulous country in the world. Half the country is arid or semi-arid and mountains cover three-quarters of it. Natural resources are scarce. Yet 1.3 billion people live in China, which is undergoing a remarkable rate of economic growth. At the same time, China's environmental problems of energy and wat...

In Iran, cheetahs collared for the first time

...inent, Asiatic cheetahs now live only in extremely arid habitat on the edges of Iran's Kavir Desert. WCS's government partner in Iran, the Department of Environment/CACP project estimates their remaining numbers between 60 and 100 animals, making the Asiatic cheetah one of the most imperiled cats on earth...

Climate change was the cause of Neanderthal extinction in the Iberian Peninsula

...mo Sapiens arrived in the Iberian Peninsula. Cold, arid and highly variable climate was the least favourable weather for Neanderthals and 24,000 years ago they had to face the worst weather conditions in the last 250,000 years. The most important about these data is that they differ from the current sc...

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