What was the biggest breakthrough in science and technology in the US in 2021?

2021 has been a year of significant scientific and technological breakthroughs in the US. One of the most notable ones was the successful landing of NASA's Perseverance rover on Mars, marking the start of an exciting new phase in the exploration of the Red Planet. This feat was accomplished using state-of-the-art technologies, including the first-ever Mars helicopter, which demonstrated the potential for airborne exploration of the Martian surface.

Another breakthrough in science and technology in the US was the development of highly effective COVID-19 vaccines, which have been crucial in the fight against the pandemic. These vaccines, developed by pharmaceutical companies such as Pfizer-BioNTech and Moderna, were found to be over 90% effective in preventing symptomatic COVID-19 infections and have already been administered to millions of people worldwide.

Other notable breakthroughs in science and technology in the US in 2021 include the development of quantum computing technologies, breakthroughs in gene editing using CRISPR, and the continued progress in the development of renewable energy technologies such as wind and solar power.

There were many scientific and technological breakthroughs in the US in 2021, but some of the most notable include:

• The development of effective COVID-19 vaccines. The Pfizer-BioNTech and Moderna vaccines were both authorized for emergency use in the US in December 2020, and the Johnson & Johnson vaccine was authorized in February 2021. These vaccines have been shown to be very effective in preventing COVID-19, and they have played a major role in the pandemic response.
• The launch of the James Webb Space Telescope. The James Webb Space Telescope is the largest and most powerful space telescope ever built. It was launched in December 2021 and is now orbiting the Sun, about a million miles from Earth. The telescope will allow astronomers to study the early universe in unprecedented detail.
• The development of new artificial intelligence (AI) technologies. AI technologies have made significant progress in recent years, and 2021 was no exception. Several new AI technologies were developed in 2021, including new methods for natural language processing, computer vision, and machine learning. These technologies have the potential to revolutionize many industries, including healthcare, transportation, and manufacturing.
• The discovery of new exoplanets. Exoplanets are planets that orbit stars other than the Sun. In 2021, astronomers discovered several new exoplanets, including several that are potentially habitable. The discovery of these exoplanets raises the possibility of finding life beyond Earth.
• The development of new cancer treatments. Several new cancer treatments were developed in 2021, including new drugs and new surgical techniques. These treatments have the potential to improve the lives of millions of people who are affected by cancer.

These are just a few of the many scientific and technological breakthroughs that occurred in the US in 2021. It was a year of great progress in many fields, and it is exciting to see what the future holds.