The US Public Health Service currently recommends an optimal fluoride concentration in drinking water of 0.7 milligrams/liter ...
Scientists have detected organic compounds and minerals necessary for life in the samples collected by the OSIRIS-REx mission ...
When asteroids like Bennu hit the young Earth, they could have provided a complete package of complex molecules and the ingredients essential to life, such as water, phosphate and ammonia. Together, ...
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