Uncategorized
- Astronomy
Free-floaters: Images of planets?
Several recent studies have escalated the debate about what exactly constitutes a planet.
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Please explain a curious statement in “A more perfect union.” The article paraphrases Jonas Sandstrom of Uppsala University in Sweden as suggesting that an “endosymbiont’s isolation may be a one-way ticket to extinction. Once the bacterium loses genes . . . it has no way of getting them back. It can’t, therefore, evolve away from […]
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A More Perfect Union
Forsaking life in the outside world, endosymbiotic bacteria of some insects traded freedom and nutrients for life inside a cell.
- Chemistry
Cosmic Chemistry Gets Creative
By simulating extraterrestrial impacts on Earth, researchers are firing away at the question of how life started.
