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How excited should we be about the latest Mars potential biosignature discovery? 'It's arguably the best evidence we have so far'

It's not the first time there have been claims of signs of life on Mars, so why are scientists particularly thrilled now?

Venus flytrap's touch response traced to specialized ion channel in sensory hairs

Plants lack nerves, yet they can sensitively detect touch from other organisms. In the Venus flytrap, highly sensitive ...