UK 5 Days

Today:

    A chilly (寒冷的) and frosty start for many this morning, followed by a day of sunshine and local showers. The showers will be slow moving and heavy at times, particularly in the east with a risk of thunder.

Tonight:

    Showers will ease this evening and clear spells (一段时间) will develop, causing a widespread frost. However, rain will push into the northwest during the early hours, turning heavy at times.

Friday:

    Rain, locally heavy, will continue southwestwards through the day with strong winds. Elsewhere, it will be bright with some sunshine.

UK outlook for Saturday to Monday:

    Rain across central parts on Saturday will ease and move northwards. Largely dry elsewhere with some misty sunshine. A mixture of sunshine and showers on Sunday and Monday, turning warmer.

    Updated at 04:04 on Thur. 31 Mar.

UK 6-30 days

UK outlook for Tuesday 5 Apr. to Wednesday 13 Apr.:

    A generally unsettled picture is likely next week, with showers or longer spells of rain affecting the majority of the UK, but with some drier and sunnier interludes (间歇). Temperatures will probably be around normal for most, but central and southeastern areas may see some warmer air moving up from the continent at times. The week after next will probably continue to be changeable with showers or longer spells of rain crossing the UK, but with some brighter and drier interludes in between. Temperatures may become rather low across the north and northwest later next week.

    Updated at 12:36 on Wed. 30 Mar.

UK outlook for Thursday 14 Apr. to Saturday 30 Apr.:

    It is likely to be changeable with a mixture of sunny spells and showers. However, some longer drier spells are also likely, particularly in northwestern areas. Overall temperatures will remain around normal for the time of year but with some warmer spells developing at times.

    Updated at 12:37 on Wed.30 Mar.

    US scientists say they have poured cold water on the theory that washing hands with hot water kills more germs (细菌) than unheated water. The small study of 20 people found using water at 15C (59F) left hands as clean as water heated to 38C (100F).

    National Health Service (NHS) recommends that people wash their hands in either cold or warm water. In this study, scientists at Rutgers University-New Brunswick wanted to find out if popular assumptions about the benefits of warm or hot water and official guidance on hot water — given to the food industry in the US — held true. They asked 20 people to wash their hands 20 times each with water that was 15C (59F), 26C (79F) or 38 degrees (100F). Volunteers were also asked to experiment with varying amounts of soap. Before they started the tests, their hands were covered in harmless bugs. Researchers say there was no difference in the amount of bugs removed as the temperature of the water or the amount of soap changed.

    Prof Donald Schaffner said: “People need to feel comfortable when they are washing their hands but as far as effectiveness goes, this study shows us that the temperature of the water used did not matter.”

    However, the researchers accept their study is small and say more extensive work is needed to determine the best ways to remove harmful bacteria.

    In the UK, NHS experts say people can use cold or hot water to wash their hands. They say hands should be washed for at least 20 seconds and stress the importance of using enough soap to cover the whole surface of the hands. Their guidance focuses on rubbing hands together in various ways to make sure each surface of each hand is clean.

Do's and Don'ts in Whale (鲸) Watching

    The Department of Fisheries and Oceans has developed guidelines for whale watching in Johnstone Strait, where killer whales are found on a daily basis each summer. It is strongly recommended that vessel (船只) operators follow these guidelines for all kinds of whales.

•Approach whales from the side, not from the front or the back.

•Approach no closer than 100 metres, then stop the boat but keep the engine on.

•Keep noise levels down — no horns, whistles or racing of engines.

•Start your boat only after the whales are more than 100 metres from your vessel

•Leave the area slowly, gradually moving faster when you are more than 300 metres from the whales.

•Approach and leave slowly, avoiding sudden changes in speed or direction.

•Avoid disturbing groups of resting whales.

•Keep at low speeds and remain in the same direction if traveling side by side with whales.

•When whales are traveling close to shore, avoid crowding them near the shore or coming between the whales and the shore.

•Limit the time spent with any group of whales to less than 30 minutes at a time when within 100 to 200 metres of whales.

•If there is more than one vessel at the same observation spot, be sure to avoid any boat position that would result in surrounding the whales.

•Work together by communicating with other vessels, and make sure that all operators are aware of the whale watching guidelines.

    If you could have a superpower, what would it be? Other than flying and communicating with someone from his mind (which, let's be honest, would probably actually be awful), breathing underwater is one of the favorites. You can hang out with Aquaman and Ursula, and when the end of the world comes and we're all living under water, you'll be fine.

    With this in mind, a student at the Royal College of Art, London has designed a 3D-printed amphibious garment called AMPHIBIO —essentially a set of gills (鳃) —for this very purpose. According to Jun Kamei, a biomimicry designer and materials scientist, it is "for a future where humankind lives in the water".

    With the world set for a global temperature increase of 3. 2℃ (5. 7℉) by 2100, rising sea levels are a very real threat to large coastal cities, potentially affecting up to 2 billion people —or 26 percent of the current global population.

    Kamei's little device uses a specially designed porous (多孔的) material that fills oxygen again in the water and releases carbon dioxide. It is inspired by water-diving insects that create their own little scuba diving set by creating a protective bubble of air around their body thanks to their water repellent (防水的) skin.

    The technology is easily 3D-printable too, which will be great when we need them together. These "gills" could replace heavy and clumsy scuba equipment, making it more similar to free diving but for longer. This could have immediate applications for underwater rescue plans —the 12 boys rescued by divers from a flooded cave in Thailand, for example, where it took weeks to work out how to get the boys and the vital breathing equipment through those narrow tunnels.

    So far, the tech has only been tested as a working prototype, not actually on humans, so the dream may have to be on hold for now. And scaling up and testing on humans is Kamei's next plan. This may sound unbelievable, but Kamei insists he has a much more optimistic vision of the future.

    Scientists are studying different foods, and they will see which foods protect us from cancer (癌症), and which cause it. It is known that a healthy diet (饮食) will help keep a healthy body weight, which can also decrease the risk (风险) of many types of cancer.

    Fruit and vegetables

    Fruit and vegetables are an important part of a healthy diet. They can decrease the risk of some cancer types like mouth and throat cancer. They are a good source of many important nutrients such as vitamin A, vitamin C, vitamin E, and are an excellent source of fiber.

    Our advice

    Try to get plenty of fruit and vegetables in your diet. Eating fruit and vegetables with a variety of colors will help you get many kinds of vitamins and minerals as the chemicals that give these foods their colors are good for you.

    Meat

    Eating lots of red and processed meat can increase (增加) your risk of stomach cancer. Red meat includes all fresh and frozen beef, pork and lamb. Processed meat includes ham, bacon and sausage. White meat, such as chicken, is unlikely to increase your risk of cancer.

    Our advice

    Eat smaller and fewer parts of red and processed meat. Try using beans or peas instead of meat in your diet. When you cook meat, use low-temperature methods.

    Fat

    Fat is a necessary part of our diet but high-fat diet can increase our risk of cancer, heart disease and other diseases. Meat is higher in saturated fat (饱和脂肪) and eating too much saturated fat may increase your risk of breast cancer.

    Our advice

    Try not to eat too much fatty foods. In particular, try to cut down on saturated fat contained in fatty meat, biscuits, and butter. Try to avoid frying foods in lots of oil.