Starch synthesis in nature needs about 60 metabolic reactions. The Chinese research team designed an artificial starch synthesis pathway consisting of only 11 core reactions.Full Story
It carries gas cylinders whose internal pressure can reach 300 times atmospheric pressure and can supply astronauts for long periods.Full Story
In 2022, China is expected to launch the Wentian and Mengtian lab modules, two cargo spacecraft, and two crewed spaceships.
COVAX has also faced several challenges which, according to the WHO, were triggered by manufacturers prioritizing bilateral deals and many high-income countries tying up the global supply of vaccines.
Less than 3.5 percent of Africans have been vaccinated against COVID-19, which is far short of the official target of 60 percent.
"Vaccine inequity remains the Achilles' heel of our response," PAHO Director Dr. Carissa Etienne said. "A handful of companies produce all the world's supply of COVID-19 vaccines," the official added.
China is likely to achieve effective herd immunity by the end of this year with more than 80 percent of the population vaccinated, China's top epidemiologist has said.
They carried out their first extravehicular activities during the construction of the country's space station on July 4.
China's Tianwen-1 mission, consisting of an orbiter, a lander, and a rover, was launched on July 23, 2020.
Local authorities in China have ramped up mass vaccination drives to contain the latest resurgence of COVID-19 attributable to the highly contagious Delta variant.