BEIJING, Sept. 22 (Xinhua) — The following is a summary of published science and technology news of China:

SPACE LECTURE

The fourth live class from China’s space station was held on Thursday afternoon, delivered by the Shenzhou-16 astronauts Jing Haipeng, Zhu Yangzhu and Gui Haichao to students on Earth.

This was the first science lecture delivered from the Mengtian lab module of the Tiangong space station and the fourth in the “Tiangong Class” series.

RISING GLOBAL TREELINES

A group of researchers have revealed the factors that drive the upward move of the world’s treelines, providing new evidence for the impact of climate change on global ecosystems, according to China Science Daily on Thursday.

Mountain treelines are sensitive to climate change. However, the way that climate impacts mountain treelines is not fully understood, as they may also be affected by human activities.

SCIENTIFIC RESEARCH ENVIRONMENT

China will continue cooperating with other countries and international organizations to strengthen the construction of the international scientific research environment, a Ministry of Science and Technology official said on Thursday.

China stands ready to participate in addressing major global challenges and strengthening the application, management and protection of intellectual property rights, as well as related innovation, Vice Minister of Science and Technology Zhang Guangjun said in a video speech during a high-level roundtable on the top science and technology clusters in 2023.