US to ban imports of Canadian dairy, alcohol, motorcycles

U.S. President Donald Trump's administration will ban imports of certain Canadian dairy products, alcoholic beverages and motor vehicles starting September 29, according to a notice posted on the White House website on Tuesday.

The move comes amid escalating trade tensions between the two countries. On August 22, the United States imposed 50-percent tariffs on hundreds of specific Canadian goods, including wine and cement.

In response, the Canadian government announced "dollar-for-dollar, rate for rate" counter-tariffs, slapping retaliatory duties on more than 700 U.S. products valued at about 20 billion U.S. dollars, which took effect on Tuesday.

Chinese astronauts aboard the Tiangong space station delivered a live-broadcast class designated to students in China's special administrative regions of Hong Kong and Macao on Wednesday, marking the fifth Tiangong Class session.

Shenzhou-23 commander Zhu Yangzhu, spacecraft pilot Zhang Zhiyuan and payload specialist Lai Ka-ying conducted the class, which features in-orbit demonstrations and a question-and-answer session.

Lai is the first payload specialist from the Hong Kong Special Administrative Region (SAR).

The astronauts introduced the station's three-module layout and demonstrated how a gyroscope maintains its direction in microgravity. They also showed daily life aboard the station, including baking a cake in the space kitchen, exercising on a treadmill and wringing out a wet towel.

Lai introduced rice, noodles and bread as staple foods available to the crew, and showed plants growing in the station's plant-growing facility, including sweet potato leaves, mint, several varieties of lettuce and kale.

Other demonstrations included a bauhinia flower -- Hong Kong's floral emblem -- floating in the microgravity environment, and a water-ball ping-pong demonstration. The crew also introduced the Tianyun camera, a space station instrument developed with input from a Hong Kong research team.

In the question-and-answer session, students asked about cuisine in orbit, astronaut training, artificial intelligence applications aboard the station, silkworm rearing and biology experiments, preparations for spacewalks and career choices.

The event was jointly organized by the governments of the Hong Kong SAR and the Macao Macao SAR, along with the China Manned Space Agency. More than 200 primary and secondary school students from the two regions attended the ground class at Tsuen Wan Public Ho Chuen Yiu Memorial College in Hong Kong, Lai's alma mater.

HKSAR Chief Executive John Lee Ka-chiu and officials from both regions also attended the session. At the close of the event, Lee spoke with Lai in a live link, while the crew encouraged young people in Hong Kong and Macao to pursue scientific exploration.

The session was broadcast live to primary and secondary schools across both regions, as well as through official online platforms and local broadcasters.