If you live in the U.S., you're probably used to throwing banana peel into the trash. But people in other countries, including India, have been taking advantages of their nutritional benefits for many years.

    While the flesh of a banana is soft and sweet, the skin is thick, hard and slightly bitter. To eat the peel, you can fry, bake, or boil it for at least 10 minutes. Also, the riper bananas get, the thinner and sweeter banana peel will become. That's because of a natural plant hormone(激素) called ethylene(乙烯) that fruits release as they ripen. Ethylene interacts with the sugars and fiber in the banana skin, changing complex sugars into simple sugars and breaking down pectin, a form of fiber in bananas that keeps them stiff. That's why the older your banana is, the flimsier(不结实的) it feels.

    The sweet flesh of a medium-sized banana contains great percentages of your daily recommended intake of various nutrients, such as:

·12% of your daily fiber, which helps with digestion and may help lower your risk of diabetes(糖尿病)

·17% of your vitamin C, which is important for your immune system as well as your growth

·20% of your vitamin B6, which aids the body's ability to turn food into energy

·12% of your potassium, which helps with the development of cells, tissues, and organs throughout the body

    If you eat the skin along with the flesh, you will get an even bigger increase in these same nutrients.

    Eating the peel is not only good for your body but also better for the earth. The average American ate 11.4 pounds of bananas in 2014. Since a medium-sized banana weighs about 0.3 pounds, that equates to about 38 bananas per person, or about 12 billion for the whole of the U.S. And since most of us throw away the peel, that also means a lot of organic waste.

    Some houses are designed to be smart. Others have smart designs. An example of the second type of house won an Award of Excellence from the American Institute of Architects.

    Located on the shore of Sullivan's Island off the coast of South Carolina, the award-winning cube-shaped beach house was built to replace one smashed to pieces by Hurricane（飓风）Hugo 10 years ago. Before Hugo, many new houses built along South Carolina's shoreline were poorly constructed, and enforcement of building rules wasn't strict, according to architect Ray Huff, who created the cleverly-designed beach house. Soon after Hugo, all new shoreline houses are required to meet stricter, better-enforced rules. The new beach house on Sullivan's Island should be able to withstand a Level 3 hurricane with peak winds of 179 to 209 kilometers per hour.

    At first sight, the house on Sullivan's Island looks anything but hurricane-proof. Its redwood shell makes it resemble “a large party lantern (灯笼)” at night, according to one observer. But looks can be misleading. The house's wooden frame is reinforced with long steel rods to give it extra strength.

    To further protect the house from hurricane damage. Huff raised it 2.7 meters off the ground on timber pilings－long, slim wood pieces anchored deep in the sand. Pilings might appear insecure, but they are strong enough to support the weight of the house. They also raise the house above storm waves. The pilings allow the waves to run under the house instead of running into it. 'These waves come ashore at terrible speeds and cause most of the damage done to beach-front buildings,” said Huff.

    Huff designed the timber pilings to be partially hidden by the house's ground-to-roof shell. “The shell masks the pilings so that the house doesn't look like it's standing with its pant legs (裤腿) pulled up,” said Huff. In the event of a storm, the shell should break apart and let the waves rush under the house, the architect explained.

    New Zealand's government is hoping to make the nation greener by planting 100 million trees each year, ensuring the electricity grid（电网） runs entirely from renewable energy, and spending more money on cycle ways and rail transport. The government's plan is to reduce its net greenhouse gas emissionto zero by the year 2050.

    New Zealand's prime minister Jacinda Ardern has set ambitious environmental policies to confronta warming planet. “We will absolutely focus on the challenge of climate change,” said Ardern. “That will include a zero carbon government policy. That will include an independent climate commission. That will include making sure that we have an all gases, all sectors emissions trading scheme,” she added. According to the Associated Press (AP), Arden said the goal of doubling the amount of trees the country plants each year is “absolutely achievable.”

    Not everybody is happy with the plans. Many farmers are worried they will be required to pay more if they are absorbed into an emissions trading plan. “There is concern that if this should happen, New Zealand will become less competitive with other food-producing nations.” said Katie Milne, the president of Federated Farmers.

    More than 80 percent of New Zealand's electricity already comes from renewable resources. The AP reported that Ardern wants to increase it to 100 percent by 2035, in part by investing more in solar, which currently takes up only 0.1 percent of the country's total renewable energy slice.

    A company in San Francisco, California, has found a way to turn used plastic bottles into women's shoes.

    Every day, millions of Americans drink water and other liquids from plastic bottles. More than 60 million of them are thrown away each day. Many of the plastic bottles end up in landfills or are burned with other waste products.

    A San Francisco start-up company called Rothy's, however, turns this plastic waste into environmentally friendly shoes. Roth Martin is the company's co-founder. He explains how they turn plastic into soft material for women's feet. They take the plastic, clean it, and break it down into small pieces. Then they press them through a device that makes soft fibers. Those fibers are then combined together. This is done by a 3D machine. It is designed to reduce waste while making the shoes. The knitted stuff and the inner part of the shoe are then attached to the shoe's outer part, called the sole. This outer sole is also made from environmentally friendly material: responsibly sourced no-carbon rubber.

    Rothy's shoes are sold online. They are flat shoes, with either a rounded or pointed toe. They come in different colors and designs. They cost either $ 125 or $ 145 per pair, depending on the design. After American actress Gwyneth Paltrow discovered them last year, the demand for the shoes grew. Martin says there is no shortage of material to fill that demand. "We're not going to run out of water bottles any time soon. So we have a limitless supply of material, and I think that is a good sign for our future." When the environmentally friendly shoes wear out, customers can return them at no cost to a company that uses the recycled material to make other products.

    For now, the shoes are only available to be shipped in the United States. However, the company says it will add international shipping in the near future.

    The ocean is filled with eight million tons of rubbish—enough to fill five carrier bags for every foot of coastline on the planet. But a new invention could deal with this problem, one port at a time.

    A pair of surfers from Perth, Australia, has invented a "floating bin" that automatically draws rubbish floating on the water into it like a vacuum (真空) cleaner. While the invention may do little to battle against five giant "garbage islands" that flow around the world's  major ocean gyres (环流), it could stop waste from leaving harbours and marinas, for example. Peter Ceglinski and Andrew Turton said their device could spell the end of polluted seas.

    The concept is simple: A bucket connects to a water pump, drawing in any floating trash inside a removable net bag. There is also an optional oil-water separator system inside the pump. It can remove oil from the seawater before spitting it back into the ocean — pollution-free — through the other side of the pump.

    The water filtration (过滤) system is much like what you'd find in a fish tank, but it has the potential to clean up an entire ocean. The seabin can run 24/7, according to its website. And, amazingly, Peter and Andrew say they have never caught a fish or sea animal in their pumps in four years of testing.

    The Seabin Project aims to improve on the traditional and sometimes expensive — harbor cleaning methods of having a person physically remove trash from the water or sending boats equipped with nets to collect it. While it's not as extensive as 21-year-old Boyan Slat's plan to clean the entire Pacific Ocean in 10 years, starting in 2020, the seabin's creators said their device is something that harbors can start using to clean our oceans now.

    They're starting "close to the source of the problem in a controlled environment," Seabin's website states. "It's a big mission, but it can be done. In fact, we're doing it right now."

    The World Happiness Report, a United Nations agency report, measures (估量) how happy people are, and why. Norway is the happiest place on earth—beating neighbour Denmark from the number one position.

    Denmark, Iceland, Switzerland and Finland are among the top five, while the Central African Republic came last. Western Europe and North America took up most of the places at the top of table, with the US and UK at 14th and 19th respectively.

    The World Happiness Report mainly depends on asking a simple question of more than 1,000 people every year in more than 150 countries. “Imagine a ladder, with steps numbered from 0 at the bottom to 10 at the top,” the question asks. “The top of the ladder is the best possible life for you and the bottom of the ladder is the worst possible life for you. On which step of the ladder would you say you personally feel you stand at this time?”

    The average (平均的) result is the country's score—from Norway's 7.54 to the central African Republic's 2.69. But the report also tries to explain why one country is happier than another. It looks at reasons including economic strength, social support, freedom of choice, and generosity.

    This year's report also has a text titled “restoring (恢复) American happiness”, which examines why happiness levels in the United States are falling, despite continually-increasing economic improvement. “The United States can and should raise happiness by solving American's social problems—rising inequality and distrust—rather than focusing mainly on economic growth,” the authors said.

    Jeffrey Sachs, the director of the Sustainable Development Solutions Network, which published the report, said President Donald Trump's policies were likely to make things worse.