You eitherhave it, or you don't—a sense of1that is. But2isit that some people could find their way across the Sahara without a map, whileothers can3themselves in the next street?

    Scientistssay were all4with a sense of direction, but it is notproperly understood how it works. One theory is that people with a good sense ofdirection have worked hard at5it. Research being carriedout at Liverpool University supports this idea and suggests that if we don't useit, we lose it.

    Childrenas young as seven have the ability to find their way6,"saysJim Martland, Research Director of the project. "However,7theyare not allowed out alone or are taken everywhere by car, they will8developthe skills. "

    Jim Martlandalso emphasizes that young people should be taught certain9toimprove their sense of direction. He makes the following suggestions:

    If youare using a map, turn it so that it10to the way you are facing

    If youleave your bike in a strange place, put it near11likea big stone or a tree. Note landmarks on the route as you go away from your bike.When you return, go back along the12route.

    Simplifythe way of finding your direction by using lines such as streets in a town, streams,or walls in the countryside to guide you.13yoursteps14you know how far you have gone and note anylandmarks such as tower blocks or hills which can help to find out were you are.

    Now youwill never get lost15!

Health problems which are related to climate change are getting worse, say two research reports.

The report s followed 44 health problems that are related to climate change around the world. They include heat deaths, infectious diseases（传染病）and hunger. "All of them are getting worse," said Marina Remanello. She is research director of the Lancet Countdown project. "With global worming getting worse, doing nothing on climate and health will cost more than acting now, one of the reports says.

The reports are called "code red for a healthy future". One report is centred（集中）on the US and the other is centred on the whole world. The reports found some dangerous facts. At-risk populations like older people and the very young are more easily influenced by high temperatures. For people over 65, the researchers found they stayed living in warm places where it is easier for some diseases to spread. For example, coast areas are warm enough for dangerous bacteria （细菌）to grow. In some poor nations me season for disease-spreading mosquitoes（蚊子）has got longer since the 1950s.

The research also found that 72 percent of countries saw an increase in wildfires. And in 2020, up to 10 percent of the world's land surface was influenced by extreme（极端的）drought. In the US, the heat. fire and drought caused the biggest problems. The Pacific Northwest and Canada saw extreme neatwaves. An earlier study found that the heatwaves would not have happened if there were no human-caused climate change.

The Yarlung Tsangpo Grand Canyon is more than 500 kilometers long and 2, 268meters deep{#blank#}1{#/blank#}, with the deepest point reaching 6, 009 meters and the river running at a top{#blank#}2{#/blank#} of sixteen meters per second. Hence some people call it a "waterfall on the riverbed". This world's deepest and largest canyon in southeast Tibet also accommodates the{#blank#}3{#/blank#} mountainous biodiversity () on the globe. Here you can see many rare animals and plants and experience the change of the four seasons within a {#blank#}4{#/blank#} day. It could{#blank#}5{#/blank#} "the last wonderland on Earth. "

Happiness is important for everyone. Most people want to be happy, but few know how to find happiness. Money and {#blank#}1{#/blank#} alone do not bring lasting happiness. Happiness {#blank#}2{#/blank#} on ourselves. 

The {#blank#}3{#/blank#} secret of happiness is to enjoy the simple things in life. You should enjoy life's simple pleasure such as reading a good book, listening to your favorite music or spending time with close friends. People who have several good friends tend to live {#blank#}4{#/blank#} and happier lives. 

The second secret to {#blank#}5{#/blank#} a happy life is to be active. Many people experience this by dancing, or playing a sport. You can forget about your problems, and only think about the activity. 

Finally, many people find happiness in helping others. According to studies, people feel good when they volunteer their time to do many meaningful things for other people. So if you want to feel happier, just try to help others. 

How do people from all over the world spend their free time? Let's have a look.