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Dogs mirror stress levels of their owners

The owner’s personality was the most important factor in examining the stress-hormone relationship between pet and owner. By Stephen Johnson – A new study found that dogs and their owners show similar levels of the stress hormone cortisol over time. The dog-owner cortisol …

Sponges help scientists detect waterborne DNA

  By Ben Coxworth – Brown tube sponges on a reef in Belize. (Credit: dsabo/Depositphotos). We’ve recently been hearing about how scientists can tell which creatures are present in an aquatic environment, by detecting their cast-off DNA in the water. A new study …