zinc

But if you want healthy plants, avoid planters made of copper or galvanized metal because they can leach copper and zinc into the soil.

Last year, Francis changed the practice of popes being buried in three coffins to only two: a wooden coffin with a zinc coffin inside, PBS reported.

Pope Francis has opted for a simple wooden coffin lined with zinc.

While its detractors have argued that the zinc and copper coin is a waste of money and resources, those who support it say that the coin keeps prices lower and boosts fund-raising for charities.

Scientists have confirmed that as carbon dioxide levels rise in the atmosphere, staple crops like wheat and rice lose vitamins, proteins and micronutrients like zinc and iron that humans need to survive.