What does an iceless Lake Superior portend?

From Duluth, Lake Superior is a colossal expanse of blue this week with no otherworldly ice shards smashed against the shore or colorful fish houses decorating stretches of white.

Using the cane toad's poison against itself

(Phys.org) -- An effective new weapon in the fight against the spread of cane toads has been developed by the University of Sydney, in collaboration with the University of Queensland.

Mexican fish extinct in wild successfully reintroduced

There once was a small fish called "tequila splitfin" or "zoogoneticus tequila" that swam in a river in western Mexico, but disappeared in the 1990s. Scientists and residents, however, have achieved the return of a species ...

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