Home > Lifestyle > EnviroHealth > Faqs Faqs All sections in Environmental Health » 21st Century Life » FAQs » Animals » Climate and pollution » Hazards and disasters » EnviroHealth News » Green Tips Sun damage through glass Does glass, like a car window, offer any protection from the sun's rays? Start A Health24 blog » Follow Health24 on Facebook » Test Are you envirohealth savvy? » Ask EnviroHealth Expert » Blood Lions: Bred for the Bullet movie trailer The amazing mountains on Pluto Glossary of environmental terms This glossary is a work in progress. If the term or concept that's baffling you isn't on this list, just ask and we'll add it. Which meat harms the planet most? Lamb, pork, beef, chicken: which meats do the most damage to the environment? Can smoking cause global warming? Smoking itself doesn't significantly contribute to climate change, but the farming and processing of tobacco certainly does. Is the ozone hole still an issue? Since the phase-out of ozone-depleting compounds, atmospheric concentrations of many such gases has lessened. However, it will take many years for the ozone hole to heal. Black particles in tapwater? Q: My kitchen sink mixer was recently replaced by a plumber and he flushed the pipes for more than half an hour, emptying my geyser in the process. What are “heavy metals”? “Heavy metals” are those with high density. They are often implicated in human poisoning, especially lead, mercury, arsenic and cadmium. Can aircon make you sick? Does the air conditioner in a office make one sick? Flu? Colds? Sinus conditions? What is multiple chemical sensitivity? “Multiple chemical sensitivity” means that a person is hypersensitive to chemicals in the environment. The condition is associated with chronic flu-like or allergy-like symptoms What is sick building syndrome? Sick building syndrome is when people who occupy a building experience symptoms that occur mainly when they spend time there. The cause is thought to be poor indoor air quality. load more articles advertisement From our sponsors 10 facts about diabetes and insulin you need to know How to care for your vaginal flora JHB - Free Caregiver Workshop with TENA experts - 15 February JHB - Free home visit and assessment with a TENA nurse advisor Live healthier Hello? » SEE: Interesting facts about hearing loss Earworms: Let it go Is it bad to sleep with earplugs all the time? SEE: Do women hear better than men? The reason why men often appear not to be listening could be because they actually can't hear you. Confident smile? » Acidic drinks can harm your kids' smiles The facts on bleaching your teeth Am I taking good care of my teeth? Why are my teeth stained? We know the rules – brush your teeth twice a day and floss to keep them healthy. But, have you ever wondered what causes those stains that sometimes appear?