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Treatments and triggers for drug dependence | Processing the Environment | MCAT | Khan Academy

Treatments and triggers for drug dependence | Processing the Environment | MCAT | Khan Academy

– [Voiceover] Drug addiction is a medical problem, and just like other psychological diseases, it has both physiological and psychological components. So it makes sense that treatments for drug addiction would address both physiological and psychological sides of the problem. For serious addictions, hospitalization might be needed as the person goes through withdrawal both to …

Did Life Exist on Venus Before Earth? | Unveiled

Earth’s evil twin is about the same size and mass, but it has an incredibly toxic atmosphere full of heavy CO2, scorching temperatures, and acid rain. Venus is so inhospitable that we gave up on sending probes out there before the turn of the century. However, plenty of evidence suggests that it wasn’t always this …

NOVA scienceNOW : 7 – Fastest glacier

NOVA scienceNOW : 7 – Fastest glacier

ROBERT KRULWICH: And now, with RNAi as their key, scientists will have the means to decode every living thing, to identify the genes that allow us to grow, that allow us to move, that give us beauty and color. RNA is a modest little molecule, but what it gives us is the world. So now …