When most people think of drones (无人机), they think of technology and fun. Safe to say, few people would think about farming. However, a group of students from York College of Pennsylvania have been building a drone that will not only help local farmers but the environment, as well.

Samantha Gotwalt and Blayde Reich, two senior Mechanical Engineering majors at York College in the group, both found the work to be quite fascinating. According to Samantha, the idea came from a York College professor, who has worked with drones, and wanted to get students involved with a project beneficial to the community. “We really want to help farming and agriculture. It’s super-important to America and our economy,” Blayde says. “We want to help the smaller farmers, and one of the perks is not having to spend their money on fertilizer and pesticides (杀虫剂).”

The idea is to design and build a drone that will take video imagery of the fields to determine what is needed to produce the best crop, while saving money and sparing the environment by reducing pollutants in the water runoff. Ideally, that data gained will help the farmers better determine what chemicals they need — and what they don’t.

However, finding the right equipment for the project was a challenge, starting with what drone the team would design for this particular usage. Samantha says she researched durability and control of drones to help make the proper determination.

“We are flying over the field and we want to have enough efficiency and go relatively slow enough that our pictures turn out well - and fly low enough that it is not using up all of its power,” she says. “The fields are a couple hundred acres(英亩), so you need your drone to be able to fly the length of that field.”

Blayde says the team continues to learn a great deal of information that will help the farmers and the environment.

It’s exciting to imagine how future humans will have solved the problems we have now, or what amazing new inventions will make our lives more convenient and interesting. We asked top scientists to share their predictions on what the world will be like in a century. If they’re right, the 2114 is going to be really cool.

Robots will be doing most of our jobs, from building homes to teaching math. There are already robots that clean floors and pump gas. In the future they will be more complicated and useful. Unfortunately, with robots taking all the jobs, unemployment will be high.

Speaking of being social, we will communicate in an entirely different way. Forget texts and emails. Mind-reading technology will allow us to send thoughts to each other without speaking a word. We will also be able to send thoughts to objects around us. (Instead of pressing “start” on the microwave, you could just think “start.”) Meanwhile, chips implanted (植入) in our brains will improve memory and intelligence.

Today, around 30,000 Americans die in car accidents each year. One hundred years form now, accidents will be a thing of the past. According to Mark Safford, consultant or the U.S. Department of Transportation, future cars will drive themselves. These electric cars will communicate with other cars on the road to travel safely in close formation at high speeds.

Raising animals is not an efficient way to produce food, and it harms the environment: Cows, chickens, and pigs eat a lot, and then we have to deal with all that poop (粪便). What’s more, that poop can up poisoning lakes, rivers, and streams. Today, scientists can “grow” meat in a lab from animal cells, but it’s expensive and not very delicious. In the future, they will have perfected the process. You’ll order hamburgers that come from factories, not cows. Scientists may even find ways to make lab-grown meat tastier and healthier than the real thing.

Scientists have known for many years that houseplants benefit people’s well-being. Now researchers have found a way to make plants even better for human health. Using a method called genetic modification(基因编辑), they raised plants that reduce indoor air pollution. GM means changing a plant or animal by fixing its DNA, including adding DNA from another species(物种).

Indoor air pollution is produced by cleaning products, cooking, and dust, among other things, and it can be bad for people’s health. In 1989, research done by NASA found that houseplants could clean the air in a home. Later studies, however, showed that plants actually made too small a difference to help much. Since then, scientists have been experimenting with the DNA of certain houseplants to try to create one that will reduce more air pollution.

In 2018, scientists from the University of Washington decided to adapt a houseplant called pothos, or devil’s ivy, which is popular and easy to care for. The team added new DNA based on a chemical found in a rabbit’s liver. In the animal, the chemical breaks down harmful matter. The team found that the new DNA made the plant better at taking in pollution.

More recently, a company called Neoplants added more DNA, from two types of bacteria(细菌). As the devil’s ivy grow, the team studied it carefully. Tests suggested that it was up to 30 times better at taking in pollution than the non-GM plants that NASA tested back in 1989. The company is also planning to add bacteria to the soil that comes with the plant, which could help break down even more polluting gases.

There is more work to be done, but the team at Neoplants plans to use this technology in other types of houseplants. If all goes well, the company hopes people in the US will be able to decorate their homes with pollution-busting plants by next year. Another company, Origen Air, sells a plant-based system that cleans the air in businesses and homes. It has already appeared on the market in Canada.