Should you really be weeing on your lemon tree? How close are we to finding proof of life on Mars? And what would happen to a helium balloon in zero gravity? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.
Should you really be weeing on your lemon tree? How close are we to finding proof of life on Mars? And what would happen to a helium balloon in zero gravity? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.