I knew the Mediterranean Sea was once landlocked, and flooded a few million years ago via the Strait of Gibraltar, but I never stopped to think about what this meant. Prior to the sea flooding, it had

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-adjuvant: substance added to a vaccine to enhance the body's immune response and increase the vaccine's efficacy -attenuation: altering a pathogen to make it less virulent (or even harmless) -acquired

soil salinity - when soils have high salt levels that have adverse effects on plants.

Turning saltwater into clean drinking water is an expensive, energy-intensive process, but could the wonder material graphene make it more accessible?