Is there more good news than bad? Newspapers present a world of war, violence, environmental destruction and division. But some say we have many reasons to be cheerful.
Behold: the clean battery of the future
Cotton candle: Just two grams of cotton are needed for each battery cell. Glossary
Henna - A reddish-brown dye made from the powdered leaves of a tropical shrub.
Durian - A spiny oval tropical fruit with a very strong smell.
Pesticide - A substance used for destroying insects or other organisms.
Dengue - A debilitating viral disease transmitted by mosquitoes.
Colombia - A country in South America with a population of just over 50 million.
Relentlessly - Unceasingly.
Gaza - The smaller of two Palestinian territories, home to two million people. It is located on the Mediterranean coast, bordered by Israel and Egypt.
Myanmar - The largest country in mainland south-east Asia, formerly known as Burma. It is an ethnically diverse place, something that has often resulted in fierce conflict.
Nutrition - The process of taking food into the body that you need to live and grow.
Teflon - Its scientific name is polytetrafluoroethylene.