The new technique works by taking advantage of plants' ability to generate an electrical impulse when struck by light - part of the process of photosynthesis.

BBC: NEWS | Health | Spinach may hold blindness cure

Considered the world's most advanced sun-powered plane, the Solar Impulse took off from Moffett Field in Mountain View at first light for a two-hour practice run in advance of a planned multi-city, cross-country tour.

WSJ: Sun-powered plane completes California test flight

On the other hand, the medical community has moved forward "light years" in its understanding and ability to handle other risk factors for substance abuse, such as ADHD, impulse control challenges, mental health concerns like anxiety or significant trauma, which may have occurred prior to the child coming into the family -- all of which are risk factors for substance abuse, says Albers.

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