The coral reefs in Con Dao waters have been recovered after the “catastrophe”. RECOVERY 7 TYPES OF MARRIES Con Dao sea area is considered to be the place with the highest marine biodiversity in Vietnam with coral reefs playing an important role. However, since 1997, the coral in Con Dao sea has developed slowly, in many places, the coral has died and bleached. Therefore, the Provincial People’s Committee “ordered” Con Dao National Park and Institute of Oceanography project “Selection of applied models of hard coral restoration in ramsar area of ​​Con Dao National Park”. Associate Professor – Dr. Vo Si Tuan, Former Director of Institute of Oceanography (Nha Trang City, Khanh Hoa Province) – project manager, said that the coral reef restoration was done in 3 areas: Dat Doc, Southwest of Hon Tai (recovered on natural bottoms) and Bai Cat (restored on artificial bottoms). Rehabilitation activities include: assessment of current conditions, removal and fixation of corals, and monitoring of survival and growth (conducted 5 turns over a 2 year period). Accordingly, there are 7 types of corals belonging to 3 varieties: Acopora, Montipora and Pocillopora selected to be restored in the waters of Con Dao. In addition, some types with beautiful shapes and colors such as Echinophyllia echinoporoides, Oxypora glabra, Echinophyllia cehinoporoides were also tested to create diverse habitats for ecotourism. In the coral restoration area on the artificial bottom, the scientists split the pieces and then fixed the corals to 150 dome-shaped concrete tanks. In areas with natural bottoms to ensure good coral growth, scientists make direct fixings on dead corals by wire or drawstring. To make sure, the group used a 35cm iron pole or 10cm steel nail mounted on the dead coral foundation as a support. Talking about the project implementation process, Associate Professor, Dr. Vo Si Tuan said that the project team of up to 20 people (including scientists from Nha Trang, Con Dao National Park staff and fishermen) is not concerned. day and night, wind waves to work both on the sea and under the ocean. In particular, the hardest thing is to bring 150 dome-shaped concrete tanks of 100x60cm size to the sea. After being manufactured in Con Dao, these 150 tanks were implemented by the team implementing the project to rent a crane to Ben Dam port. From here, it takes 25 more boat trips to transport these concrete tanks to Hon Bay Canh. Dozens of healthy fishermen were mobilized to bring the concrete tub to Cat Lon beach (Hon Bay Canh) and put it in the right position (distance from 0.5-1m). According to Mr. Tran Dinh Hue, Deputy Director of Con Dao National Park, the agency in charge of the project, said that he has accompanied the scientists of the Institute of Oceanography during 2 years of implementing the project. The project is carried out entirely on the sea, under the ocean, so it is very difficult, depends a lot on weather factors. “Sometimes, when we are implementing the work, the weather is unfavorable, the waves are strong, the wind is strong, we have to stay 10 days before we can continue to deploy”, Mr. Hue said. SIGNIFICANT IMPROVEMENT After 2 years (from October 2018 to September 2020), implementing an experimental coral restoration in Con Dao waters showed that corals have recovered well. Specifically, according to a detailed assessment of the current status of the bottom of the coral restoration area in September 2020, it shows that the amount of coral has been significantly improved through the coverage data of living corals. Accordingly, in Bai Cat Lon area, the coverage of hard corals varies from 0-13.1%. Hon Tai area The coverage of hard corals increased from 3.8% to 13.1%. Similarly for the Dat Doc area the coverage of hard corals increased from 0.6% to 10%. Thus, after 2 years of restoring corals, coverage of average hard corals at the three recovery points increased from 1.5 to 12% with the number of more than 4,400 coral groups restored on the natural bottom and 1,600 coral groups have been restored on the man-made reef. Mr. Nguyen Cong Danh, Director of the Department of Science and Technology, said the project “Selecting an application model for recovery of hard corals in the ramsar area of ​​Con Dao National Park” is an experimental project of great significance to the province and country. In particular, coral rehabilitation and development for the Con Dao ramsar area has achieved the main goal of improving coral reefs by increasing coral cover, increasing the cost of sustainable attachment for corals. restore and create a stable environment for the development of the coral reef biomes. From there, contributing to biodiversity conservation and restoration of natural resources, improving the quality of the ecosystem.

The entire NASA Jet Propulsion Laboratory (JPL) in the state of California burst out loud, clapping. After more than 10 days of delay, the Ingenuity helicopter weighing only 1.8 kg, worth $ 85 million of NASA, took off successfully on Mars. This victory is likened to NASA as the living moment of the Wright brothers (USA) who successfully made the first flight on Earth in 1903. NASA’s Jet Propulsion Laboratory (JPL) tweeted immediately after Ingenuity’s success: “Perseverance has brought us to Mars. And Ingenuity takes us higher.” “. NASA’s Mission Control Room at (JPL) received a 14-minute delay in success signal because of a distance of 289 million kilometers from Mars. Photo: NASA The moment in which the Mission Control room was delighted to hear that Ingenuity had successfully flown on Mars. Photo: Reuters “Now, 118 years after the Wright brothers successfully made the first flight on our planet in the 20th century, the Ingenuity helicopter has succeeded in performing this amazing feat in the world. another – the Red Planet – in the 21st century “- NASA Deputy Science Director Thomas Zurbuchen said. At a distance of 289 million km (from Earth to Mars), the Ingenuity Mars helicopter has done a miracle, unprecedented in history: Automatically refuel from the Sun, automatically fly to a maximum prescribed height of 3 meters and maintain that altitude stable for 30 seconds, then a gentle landing on the surface of the Red Planet. The whole process took 39.1 seconds. 39.1 seconds is only two-thirds of the time of a minute. The time is extremely short but is a wonderful fruit for the efforts of thousands of minds to contribute to Mars Mission 2020 of NASA. It took NASA nearly a decade to prepare for this feat. SURVIVAL WITH SUCKS Dr. Daniel Brown, an astronomy expert at Nottingham Trent University (UK), described sending something flying to Mars as a ‘staggering feat’. The biggest challenge of the Ingenuity engineering team is the flying environment on Mars: – First money. So far, no one (human) has set foot on Mars. All scientists know is simulate that environment through data and images transmitted by NASA’s self-propelled explorer ship back to Earth. – Second, the Mars environment is known for its harshness: The difference in temperature between day and night can “kill” human machines, in particular, Ingenuity helicopters are too small, too light (this is required technical conditions for test flight). Not to mention, the Red Planet does not have a magnetic field, the gravity one third that of Earth; and the atmosphere is extremely thin, only 1% of the pressure on the surface of our planet. Basic construction of the Mars Ingenuity helicopter. Photo of Vietnameseization: Trang Ly / Trang Dinh [Đọc thêm về cấu tạo của trực thăng Ingenuity: ‘Mổ xẻ’ trực thăng 85 triệu USD đang ‘sống tốt’ trên sao Hỏa: Sáng tạo khoa học táo bạo bậc nhất của Mỹ!] This means that in order to fly, the helicopter must be super light and turn its wings extremely fast to gain lift. Therefore, the blades of Ingenuity reach 2,500 rpm. Each propeller on the Ingenuity is made of a 57-gram composite material that powers a chopper body the size of a tissue box! OPEN THE WAY TO DISCOVER THE NEW SKY To further mark the link between the Martian Ingenuity helicopter and the Wright brothers ‘maiden flight, NASA confirmed it had named the first Mars airport (where the Ingenuity helicopter took off) as’ Wright Brothers. Field ‘. “We don’t know exactly where Ingenuity will lead us, but today’s results show that the sky – at least on Mars – may not be the limit,” said NASA Administrator Steve Jurczyk. . Just as the Wright Brothers’ flight ushered in human exploration of the sky on Earth, Ingenuity’s mission has sparked a new wave of exciting projects, poised to take the discovery of distant world to a new level. In 2027, NASA plans to launch Dragonfly mission his highly anticipated, in which a helicopter will fly over the sky of Saturn’s moon Titan. Other missions to explore distant atmospheres – such as Venus’s cloud survey mission – may soon emerge. THE MISSION OF INGENUITY NOT STOP HERE … The NASA team plans to have Ingenuity more test flights in the next few days, with up to five bolder flights over the next 30 days assuming each is successful. NASA’s Ingenuity Mars helicopter captured this scene as it hovered over the Martian surface on April 19, 2021, during its first controlled, powered flight. another planet. It uses the navigation camera, which automatically tracks the ground during flight. Source: NASA / JPL-Caltech After its first flight, the Ingenuity helicopter sent the Mars Perseverance self-propelled explorer technical data on what it had done, including a single black-and-white photo from a ground-facing camera and information. that was transmitted back to Earth. The Ingenuity helicopter that was traveling to Mars, attached to the underside of Perseverance, touched down on February 18, 2021 as part of a mission to look for signs of extraterrestrial life. Refer: NASA, Popularmechanics, DM

The song “Don’t love alone” by singer Dong Lan was nominated for the category “Best song”.

At that time, the clip recording the image of Dong Lan guitar singing this song at a cafe along the West Lake made the music lover “fever” and did not forget to urge her to soon release the complete MV. However, it was not until 6 years later that Dong Lan made it a reality.

Dong Lan, born on January 22, 1985, is a known female singer from The Voice Vietnam contest, season 1. She did not go to any art school but Dong Lan has always loved singing. receive just as Singer, just sing, know nothing Dong Lan sees life as a long outing because it wants to get rid of the overwhelming pressures, wants to freely love this life and do the things you love most naturally. She observes life with a different perspective.