R Askscience - 48 Hours
- How is the foetus able to stay in the endometrium once it start to grow ? - 20 hours
- Why can animals detect major natural events [like volcano eruptions and earthquakes] way before humans? - 23 hours
- [Non-Human medicine] How are veterinary surgeries on exoskeletal animals performed? [Including hard shelled animals, like tortoises] - 36 hours
- Do different colors travel at different speeds? - 43 hours