1 . Best Parks to See Wildlife

A recent report from a vacation site listed the total number of species and sizes of several well-known national parks. Here are some of them to see the widest variety of animals.

Cuyahoga Valley National Park, Ohio

Number of species per square meter: 317

Located 20 miles southwest of Cleveland, Ohio, Cuyahoga Valley National Park is a mixed ecosystem of forest and wetlands sheltering a variety of animals. From the boardwalk at Beaver Marsh, watch for water-loving mammals or snapping turtles (鳄龟) that can weigh as much as 55 pounds each. More than 200 bird species live in the park.

Carlsbad Caverns National Park, New Mexico

Number of species per square meter: 286

The representative for Carlsbad Caverns is the Brazilian free-tailed bat. Every summer, hundreds of thousands of the furry, big-eared creatures live in these caves in southeastern New Mexico, attracting crowds at sunset with their spectacular out flight. The Brazilians are one of the 17 bat species that nest at Carlsbad. You might also encounter wild pigs and cave swallows.

Acadia National Park, Maine

Number of species per square meter: 242

The Atlantic Ocean meets the Maine coast at this popular park on Mount Desert Island, providing habitat for wildlife with feet and flippers (鳍状肢). From the shore, scan the water for the heads of harbor porpoises (鼠海豚) and gray seals.

Black Canyon of the Gunnison National Park, Colorado

Number of species per square meter: 219

In western Colorado, the 2, 722 feet between this park s canyon edge and the Gunnison River below support numerous wildlife habitats. Experienced climbers and hikers who adventure into the inner canyon find collared lizards and mule deer.

4 . This past July was the hottest recorded month in human history. Heat waves brake temperature records worldwide. It’s more than just a matter of sweaty discomfort. As climate change worsens, access to artificially cooled spaces is rapidly becoming a health necessity.

Yet standard air-conditioning systems leave us trapped in a negative feedback cycle: the hotter it is, the more people use the air condition er and the more energy is consumed as a result. Cooling is the fastest-growing single source of energy use in buildings, according to the International Energy Agency. Breaking the cycle requires new innovations that will help bring cooler air to more people with less environmental impact.

Standard air-conditioning systems cool and dehumidify (除湿) through a relatively inefficient mechanism: in order to condense (冷凝) water out of the air, they overcool that air past the point of comfort. Many new designs therefore separate the dehumidification and cooling processes, which avoids the need to overcool. For example, some new air conditioner designs pull water from the air with desiccant (干燥剂) materials. The dried air can then be cooled to a more reasonable temperature. Massachusetts-based start-up Transaera claims that the system it is developing could use 35 percent less energy than the average standard air-conditioning unit.

However, the gains in efficiency might not help us get rid of the impact of air-conditioning. “It won’t work to simply replace every existing air conditioner with a better model and call it a day,” says Nicole Miranda, an engineer at the University of Oxford. “Instead, a truly coder future will have to employ other strategies. It’s critical to bring greenery and water bodies into cities to take advantage of natural airflow.”

“Cooling is a challenge involving many aspects,” says Sneha Sachar, an expert at the nonprofit organization ClimateWorks. “There isn’t one strategy or one answer. We need a combination of better buildings and cities, better technologies and a better understanding that the true cost of air-conditioning extends beyond electric bills.”

5 . When micro-plastics end up in farm fields, the pollution can damage plant growth. But two young researchers now report that combining fungi (真菌) with certain farm wastes can partly overcome that problem.

May Shin, 20, and Jiwon Choi, 18, met in a research design class at the Fryeburg Academy, a high school in Maine. May had desired to explore how micro-plastics might affect the ecosystem. Jiwon was crazy about plants and fungi. The young scientists cooperated to test how long-lived plastics might affect farm crops.

Scientists have shown certain fungi can aid root growth and a plant’s nutrient uptake. Those organisms are named arbuscular mycorrhizal fungi (AMF). Certain farm wastes, like straw, can provide nutrients to plants and help stabilize their roots. Such wastes are also known as mushroom substrate (基质) and people often grow mushrooms in them.

May and Jiwon planted over 2,000 scallion (大葱) seeds in pots of soil. Half the seeds got soil polluted with micro-plastics. The rest grew in plastic-free soil. The plants then were further divided into four groups. The young scientists added AMF to the soil in one group. Another group had a top layer of mushroom substrate. A third group got both treatments. The last group got none. For three weeks, the pair tracked how many scallions sprouted (发芽) in each group and measured the plants’ height once each week.

About twice as many scallions sprouted in clean soil compared to that containing plastic bits. But among plants surviving in the polluted soil, a combination of AMF and mushroom substrate helped them out. Those getting both treatments grew 5.4 centimeters per week. That was faster than either of the treatments alone or those getting none.

Jiwon and May then looked at the plant roots with a microscope. Where AMF had been added, it grew into those roots. That increased the scallion roots’ surface area, May said, which should promote their uptake of nutrients. So “I see this project as coming up with a sustainable solution for plant growth in polluted soils,” said May.

6 . People have different ways of dealing with waste paper, specifically used newspapers. Some put them in the recycling area, while others keep them as wrappers (包装纸). While these are both good measures, a Japanese publishing company had a better idea for their end use.

The Mainichi Newspapers Co., Ltd. invented the “Green Newspaper”, which allows people to grow plants with it. This unique newspaper was published on Greenery Day, which is focused on environmental news and made of green paper with seeds placed into it. What makes it even more special is the ink (油墨) used to print words and photos, which is made from plants. The publisher advises readers to tear the used newspaper into small pieces and plant them in a container with soil. They should water them, like they would do for any plant. Within a few weeks, the seeds will grow into plants.

This brilliant concept was invented by Dentsu Inc., one of Japan’s most famous advertising agencies, which works with the publishing company on the initiative (倡议). The publisher’s belief is environmental sustainability (持续性). As its mission statement says, “The Mainichi doesn’t take action only through information, but also by solving global issues.” With joint efforts, this initiative has reached the corners of Japan and sold around millions of copies daily. Other such initiatives producing plantable paper are also seen in India and the US.

About 95 million trees are lost for producing newspapers every year. The Internet, the number of whose users stands for 62.5 percent of the population worldwide, has influenced how people read news and the print readership has dropped greatly. However, the reinvention and reimagination of this newspaper will bring about a change in the publishing industry as well as having an environmental influence.

7 . How to prepare for a wildfire

Before you can effectively prepare, it’s very important to understand how wildfires operate. Many think wildfires destroy homes because a wall of flames(火焰)moves across the landscape.     1    . Now that you know what a wildfire is, here’s how you can protect your home and your family.

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Creating a defensible space around your home acts as a barrier against wildfire flames. Home hardening involves constructing with fire-resistant materials. Investing $10,000 to $20,000 in these measures significantly reduces the chance of a home being ravaged by a wildfire, lowering risk by 75%.

Similar to dry or bagged leaves, dead tree branches are dry, which means they, too, can catch fire quickly. If you have any hanging from trees or laying in your yard, remove them ASAP. The same rule applies when removing dead tree branches:     3    .

Families should go over an evacuation plan and practice it well before an emergency actually occurs. Knowing when to leave and being able to go quickly is crucial during an evacuation scenario.     4    . Then plan your primary and alternative evacuation route, and assemble emergency supplies and store them where you can get to them quickly.

    5    . Fix metal gutter covers to reduce leaf litter and windblown debris. This will ensure that things don’t burn in them and spread fire to your home. Don’t pressure-wash gutters; it can damage them or pull them off your house.