The term "regeneration" in biology can refer to the regrowth of a severed limb in some animals, but it's not a simple process; the complexity varies wildly, even between closely related species. Some salamanders regrow limbs perfectly, while others can only manage a less-functional stump. elaborate
Gene editing techniques like CRISPR-Cas9 were originally inspired by bacterial defense mechanisms against viruses. elaborate
Cryobiology involves techniques to cool biological materials down to extremely low temperatures, sometimes even below -196°C (the boiling point of liquid nitrogen), preserving them for later use. elaborate
There are more bacteria in a single human mouth than there are people on Earth. elaborate
Some insects, like certain species of stick insects, can reproduce asexually through parthenogenesis, meaning females can produce offspring without fertilization from a male. elaborate
Some astrobiologists believe that life on other planets might be based on different elements than carbon, potentially silicon. elaborate