1000 times the same walk
Greg Brown mit einer seiner Aga-Kröten Source: Greg Brown
An Australian scientist has been marching along the same path almost every evening for 22 years. Over 5000 walks have taught him amazing things about the poisonous cane toads that threaten Australia's ecosystem. My colleague Barbara Barkhausen has learned about Greg Brown's studies and spoke to me about them on the phone.
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