Scientists have identified mammals present at sites in Asia by examining the DNA in the blood sucked by leeches. They found that the nearly 750 Haemadipsa (blood-sucking) leeches stored the DNA of a ...
The beagle patrolling Toronto Pearson International Airport was prowling for the subtle scents of contraband when an unexpected odor tickled its olfactory receptors. The source was the luggage of a ...
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