Without bats, farmers may have to use more insecticide, raising environmental worries and pushing up grocery prices.

没有了蝙蝠，农民需要更多的杀虫剂来消灭害虫，而这同时也加剧了环境问题和食品价格的上涨。

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This is a risky business in a country where nobody has a credit history and legal ways of recovering bad loans (ie, without baseball bats) are weak.

ECONOMIST: Russia's economy

Ideally, bats need a warm spring followed by a summer without heavy rain and high winds and a steady cold winter so they remain in hibernation.

BBC: NEWS | UK | Scotland | Highlands and Islands | Baby bats hit by cold, wet summer

Boston University's Intelligent Mechatronics Lab launched operation Batcopter to better understand how bats can fly in clusters large enough to be detected by radar without colliding.

ENGADGET: Batcopter UAV observes anti-collision bat behavior, crashes into ground (video)