1 . An earthquake can strike without warning. But many injuries and deaths from this kind of natural disaster can be prevented if people follow these safety tips.

If you’re inside a building, stay there! One of the most dangerous things to do in an earthquake is to try to leave a building.     1     Drop down onto the ground. Get under an object that is not easily damaged. Hold on to it until the shaking stops. You can also get to a corner formed by two walls with your arms over your head. If you’re in bed when the quake hits, stay there and protect your head with a pillow.

    2     Don’t take shelter under trees, streetlights, telegraph poles or tall buildings. If you are driving stop as quickly as possible and stay away from overpasses, buildings, bridges or anything else that might fall or collapse over you.     3    

If you are trapped in the ruins, cover your mouth with a handkerchief or a piece of clothing. Use your cellphone to call for help if possible. Don’t shout.     4     Tap on a pipe or the wall so rescuers can find you.

Be prepared for aftershocks    5     However, sometimes they even happen months later. Therefore, if you are not in a safe position after the first shock, you should move quickly but carefully to a safer place.

3 . The world we are living in is suffering from increasing waste. On average, one produces between 0.11 and 4.54 kilograms of waste every day. Even more alarming, that number is expected to increase by 70 percent by 2050.

Is there anything specific you can do to help the situation? One thing is to shop smart. Buy from companies that promote sustainable(可持续的)business practices and use recycled materials in their products.

Here are some products and companies that hit the mark for being environmentally-friendly.

Wool Runners by Allbirds

These light and comfortable tennis shoes are made from natural wool. The laces (鞋带) are made from recycled water bottles. Other shoe parts are made from bean oil, and the shoeboxes are made with recycled materials.

Women’s 711 Skinny Jeans by Levi’s

It usually takes hundreds of gallons of water to make one pair of blue jeans. However, Levis Water   Less collection, uses up to 96 percent less water.

Reactive Drawstring Family Tote by Vera Bradley

These pretty bags put recycled water bottles to good use, using 23 of them per bag.

The Sunrise Reborn Pack by ASICS

ASICS’s new shoes were created with sustainability in mind. The material is dyed (染色), methods. The process also uses fewer chemicals and less energy. Regarding their future footwear lines, ASICS has made a promise. Over 95 percent of their new running shoes will be made from recycled materials. The technology behind Sunrise Reborn puts ASICS one step closer to reaching their sustainability goals. The company has promised to leave a lighter environmental footprint for future generations.

4 . Chimps live in a male-dominated society, where most of their valuable partners are other males. However, as young male chimps become adults, they continue to maintain tight bonds with their mothers, a new study finds.

“The dramatic changes of adolescence are difficult for chimps, just like they are for humans,” says Elizabeth Lonsdorf, an expert on primates (灵长动物) at Franklin&Marshall College who was not involved in the study. “Sure enough,” she adds, “their moms remain a key social partner during this time.”

Previous research has shown chimp mothers provide their sons with support that goes far beyond nursing. Young male chimps that are close with their moms grow bigger and have a greater chance of survival. What’s more, losing their mothers after weaning (断奶), but before age 12，gets in the way of the ability of young chimps to win other males and reproduce.

To see whether this bond extends later into life, researchers followed 29 adolescent (9 to 15 years old) and young adult (16 to 20 years old) male chimps at a research site in Kibale National Park in Uganda and observed them from a distance for 3 years. The team found that the young adult males spent less time with their mothers than the adolescents did—26% vs. 76%. As the male chimps grew older and more independent, they began to travel over wider ranges and spent more time away from their moms.

However, when these young adult males happened to be in the company of their mothers, they acted just like the adolescents. They groomed (梳理) their moms just as often and kept track of them. “Many mothers remained the males’ ‘best friends’ or ‘social partners’ they associated with most frequently,” says study co-leader Rachna Reddy from Harvard University.

Such persistent ties are also common in humans after sons leave their mothers and live on their own—especially in tough times, Reddy says. “We really feel what it’s like to not be able to see our mothers when we want to in tough times. The importance of those bonds in our lives and the comfort we get from them have deep evolutionary roots.”

9 . Commercial airlines alone contribute around 3% of total global carbon emissions. But the industry is actively looking for green solutions in the form of sustainable jet fuel, and in one case, that fuel may have had a previous life as your household food waste. In a study released this week in the Proceedings of the National Academy of Sciences, researchers detail a method of transforming food waste into sustainable jet fuel that can be used in existing engines.

Biomass (生物质), such as manure (粪便) and food waste, can be transformed into bio-fuels, which are renewable liquid fuels made from organic matter. Derek Vardon, a senior research engineer at the National Renewable Energy Laboratory (NREL), says that their fuel worked as a mixture of 90% conventional petrol jet fuel and 10% alternative jet fuel required by the industry currently. They also show they could push it to a 70/30 mixture, which will be possible in real world with more time and testing.

Major airline companies are eager to get involved in sustainable aviation fuel because some sustainable solutions, such as battery-operated commercial planes, just aren’t possible yet with current battery technology. A battery-powered plane would be too heavy to fly long distances, so fuel that works in the same way as the fuel we have is a simpler way to trade out emission-heavy fossil fuels.

Vardon says that because the wet waste used in the process would normally go to a landfill (垃圾填埋场) and break down to release greenhouse gases, the process of making and using sustainable aviation fuel could actually have a negative carbon footprint when scaled up.

Commercial airlines are on board to find an affordable and sustainable solution to the carbon-intensive process of air travel. Airlines are looking to hit aggressive sustainability goals by 2050, including decreasing net carbon dioxide emissions by 50%.

As Shanxi Province suffered a record - breaking rainfall and floods, thousands of ancient buildings were also     1     great risk.    2     (fortunate), thanks to accurate weather forecasts and a timely response, most of the province ‘s ancient buildings were protected in advance     3    (prevent) flooding and did not suffer too much damage. However, as a province with the     4    (large) number of ancient architectural sites in the country, Shanxi    5    (know) as the “ treasure house of ancient Chinese architecture ”, but during the recent floods and landslides     6     (cause) by days of heavy rainfall , there are still many ancient buildings in danger.

According to Shanxi Evening News, at least 16 ancient buildings registered partial collapses, cracks, or serious leaking during the rare continuous rainfall,     7     also affected the safety of the surrounding houses. In Taiyuan, capital city of Shanxi, multiple major historical and cultural sites protected at the     8     (nation) level were damaged to various extent, including the Jin Temple, and the Tianlongshan Grottoes notable for the Buddhist temples located inside. In some temples, roofs leaked after days of rainstorm and the retaining walls collapsed     9    cracked. Roads to scenic     10     (spot) were also damaged by landslides because of the saturated soil.