The Republican governor of Arkansas has announced a new plan to use tax revenue from medical marijuana sales to provide... “We find consistent evidence that increased marijuana access is associated ...

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Soap acts as a surfactant, reducing the mixture's surface tension and enabling it to stick to weed leaves more efficiently. This technique facilitates the absorption of active ingredients into ...

Marijuana — also called weed, grass, or pot, among other names — is a mind-altering substance that comes from the cannabis plant. It's one of the most used drugs in the U.S., especially among ...

The separate snow globe message, meanwhile, includes the reminder: “If you’re high, get a ride.” Each NHTSA ad also features icons depicting a marijuana leaf, vape pen and gummy bear alongside an icon ...

Assembly Speaker Robin Vos is keeping the door open for another medical marijuana proposal in the state Legislature's upcoming session. But differences between Assembly and Senate Republicans that ...

Marijuana stocks may seem a tempting investment, but make sure you're aware of the associated risks before diving into this burgeoning market. Many, or all, of the products featured on this page ...

This story appears in the October 2012 issue of National Geographic magazine. We have all held leaves, driven miles to see their fall colors, eaten them, raked them, sought their shade.

Pull large weeds from the root, look underneath the leaves of low-growing weeds, and check the soil. Investigate the topsoil (5cm to 10cm) beneath weeds, and locate injured maize seedlings within rows ...

Under federal law, using or possessing marijuana is illegal in the United States. Even so, most states allow the use of marijuana for medical or recreational purposes, or both. Public support for ...

Cannabis stocks jumped after the U.S. Department of Health and Human Services recommended easing restrictions on marijuana in August. However, cannabis also has seen slower-than-forecast progress ...