Latest Australia shark attack sparks tourism concerns

Tourism operators want aerial shark patrols to be introduced in Australia's Whitsunday Islands as they try to stem falling visitor numbers following a spate of attacks along the Great Barrier Reef.

Race against time to finish Brazil's particle accelerator

Brazilian scientists are racing against time to finish building a particle accelerator the size of the Maracana football stadium before government funds run out or it is superseded by rival technology.

Scientists spot six near-extinct vaquita marinas

Scientists said Monday they have spotted six vaquita marinas, one of the most endangered animals on Earth, off the coast of Mexico, reviving hopes for the survival of the world's smallest porpoise.

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