What Causes Opioid Addiction?

Throughout your lifetime, your brain continuously revises its own wiring. This ability of the brain to change and adapt is referred to as neuroplasticity (neuro = neuron, plasticity = the malleability of the brain). Here to explain precisely what neuroplasticity is, how it happens and how we can harness it, is one of the world's leading minds in this area – Dr Michael Merzenich.

ACS Reactions catch up with experts they talked to at the start of the pandemic and ask, "what do we know now that we didn’t back then?"

Millions of people are now being immunized with the new Pfizer/BioNTech and Moderna mRNA vaccines. Are they effective? Are they safe? Infectious disease and global health expert Carlos del Rio, MD, of Emory University answers your questions.