Two Apollo 11 astronauts question NASA's planetary safety procedures.
- Buzz Aldrin and Michael Collins revealed that there were deficiencies in NASA's safety procedures following the Apollo 11 mission.
- Moon landing astronauts were quarantined for 21 days.
- Earth could be contaminated with lunar bacteria.
Meet Deinococcus radioduranst, the world's toughest bacteria.
- The bacteria is so resilient that it's been found on the walls of nuclear reactors.
- It's unique properties have fascinated scientists, who have proposed all kinds of applications for the bacteria that range from the practical to the whimsical.
- How does this supertough bacteria withstand radiation that would kill anything else, though?
Stems cells have always been pretty amazing.
- New research indicates animals' oldest ancestor was not sponges' single-celled choanocyte bacteria as previously thought.
- It appears our earliest predecessors were something like modern stem cells.
- Our lineage just lost its founding member. The search for our true first predecessor is on!
How can a misfolded protein be behind some of the strangest and deadliest diseases out there?
- Prions don't sound so bad at first blush: they're simply proteins that have the wrong shape.
- They may sound innocuous, but "catching" prions is always fatal, and there is no cure.
- Curiously, the most famous case of a prion disease outbreak happened in a cannibalistic tribe in Papua New Guinea.
Doctors may be able to painlessly reshape cartilage with the technique.
- The application of electrical current can temporarily soften cartilage, allowing it to be manipulated before re-hardening.
- The technique promises to eliminate cutting, scarring, pain, and recovery time.
- So far it's been tested on just one bunny who now has one straight ear and one bent one.