Do you want to get some information about the latest inventions? Read the text and know how science and technology is helping to change the world positively.

In the airport, birds are the main threat. When airplanes try to take off, birds often hit the airplanes and die. These robot birds can rescue the real birds! The inventors will experiment with them at the Edmonton International Airport. So if the robot birds can work adequately in the long run, it will be great news for the birds and us too!

Here is a fantastic invention for basketball players who can’t spend much time training. This practice net has unique features. It can catch the basketball when a player shoots it into the net and send the ball back to the player automatically. The company is designing the practice nets which will come on the market soon.

Fish robots are invented by a team of Swiss scientists and look like minnows (米诺鱼). Scientists have used them to discover underwater lifestyles. When scientists put them under the sea, the result was terrific. All the real fish behaved naturally towards them. These fish robots could move like fish and change directions randomly. The scientists are now planning to add more real fish’s behavior to those fish robots.

Every year, many people die from shark attacks. The creators of lifesaver drones will make sure that the drone can spot any shark in the water. After detecting the shark, the drone will then search if there is any swimmer near the creature. If the shark tries to attack, it will rescue the swimmer and then take him to the dry land. These lifesaver drones will be deployed at the Oasis which is popular among surfers and swimmers in 2023.

Every driver loves sailing through a series of green lights without having to stop and wait at a traffic light. Now, thanks to artificial intelligence, German researchers have found a way to reduce time spent at intersections (十字路口).

Called the KI4LSA project and funded by the Ministry of Transport and Digital Infrastructure, the innovation is being tested. Scientists first studied algorithms (算法) taken from a busy intersection to learn about traffic patterns and where improvements were most needed. The new AI method uses radar sensors and high-resolution cameras to interpret traffic patterns in real time. They can determine the speed of traffic as well as waiting time and combine this with self-learning algorithms. Scientists are currently trying this out at a busy intersection in Lemgo, Germany, with encouraging results.

The intelligent lights are said to improve traffic flow by 10 to 15 percent, which results in money saved; the EU estimates that traffic jams create economic damage that adds up to 100 billion euros a year. Aside from reducing commuting (通勤) time, these traffic lights will reduce noise and CO2 emissions from cars idling (未熄火) at intersections.

Another exciting development in this research is the K14PED project, which studies pedestrians (行人) crossing intersections. Using AI, researchers can identify how many people are waiting at a pedestrian crossing and whether some of these people will need extra time to cross the street. Using a 3D points cloud, they can tell if someone has disabilities or is elderly without identifying the individual. Since pedestrian buttons that are presently at intersections cannot determine if some people have special needs or are elderly, this is a real win. Such a needs-based system could reduce pedestrian waiting time by 30 percent, which could then decrease jaywalking (乱穿马路) by 25 percent.

Testing will be done until the summer of 2022 in the German towns of Lemgo and Bielefeld, with researchers optimistic that it will be adopted by many countries. This technology is exciting news for pedestrians and drivers alike. It encourages safety, protects the environment, and may even give you more time to enjoy your morning coffee before heading off to work!

Pumpkins (南瓜) have all shapes and sizes and have colors of golden orange, white and green. Cooked in a pie, they are symbols of autumn that are grown in every county of Washington.

U.S. farmers grow more than a billion pounds of pumpkins every year, and many famers use sheets (膜) of plastic blocking the grass and preventing water loss to make their plants grow well. In the country, farmers use about a billion pounds of plastic every year. Unfortunately, that plastic is thrown away finally, and in some areas, burned in the fields.

For several years, Carol Miles has studied a new product—the soil-biodegradable (土壤生物降解的) plastic cover that can be left in the ground after harvest, then broken down by things in the soil. “You don't need to pull it out of the field and throw it away every autumn, saving time and money,” Miles said.

Most pumpkins grow along vines (藤蔓) that spread through the grass-blocking cover, and Miles wanted to see how pumpkin fruit performed over the plastic cover. That brought a challenge: the soil-biodegradable cover stuck to the bottom of the fruit.

“We have a lot of dew (露水) in the morning, and we found that if we let the fruit dry after harvest, the cover would stick more strongly to the pumpkins,” Miles said. “Nobody wants plastic stuck to pumpkins, even if it's biodegradable. But if you wipe the fruit before the dew dries, the plastic comes right off.”

Farmers who grow plants that don't set fruit on plastic covers won't meet this challenge. For those who do, it means an extra step that they'll have to weigh against advantages and disadvantages for the development.

“Challenges aside, working with this crop can bring on a happy picture,” the farmer Tymon said. “Pumpkins are great. They have bright colors, and are really fun to work with.”