As New Year’s Eve ticked over to 2017, scientists added an extra second to atomic clocks to compensate for the Earth’s variable rotation. But there are pros and cons to doing this, as Dr Karl Kruszelnicki explains.
Down through the ages, there have always been myths about immortality—that god-like ability to live forever. Marine biologists found a creature that comes closest to immortality—a tiny transparent jellyfish. Dr Karl Kruszelnicki explains.