Author(s): Eyasu Tadese M., T.E. Ada, K.N. Nigussa, Cecil N.M. Ouma
During the Chávez presidency, Venezuela reclassified its reserves. Previously, there were thought to be just 80 billion barrels of extractable oil, but by 2011, its reported figure had nearly quadrupled. That statistical change was made possible by high oil prices at the time, which allowed previously unviable projects to look feasible.
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在未经权威机构核实、未向厂商合规上报、在相关漏洞没有完整技术细节的背景下，网络平台上出现大批量有组织的安全恐吓内容，这是典型的黑公关炒作。
机器人租赁值得观察，但远未到可以盲目乐观的阶段。它不是骗局，但也绝非稳赚。
Some experts say this signals the start of a new space race – not just for prestige, but to build a long-term presence on the Moon, tap its resources and use it as a stepping stone to Mars. We speak to the BBC’s Science Editor, Rebecca Morelle.