There are three books I reread annually. The first, which I take to reading every spring, is Ernest Hemingway’s A Moveable Feast. Published in 1964, it’s his classic memoir of 1920s Paris. The language is almost intoxicating (令人陶醉的)，an aging writer looking back on an ambitious yet simpler time. Another is Annie Dillard’s Holy the Firm, her poetic 1975 ramble (随笔) about everything and nothing. The third book is Julio Cortazar’s Save Twilight: Selected Poems, because poetry. And because Cortazar.

So is Paleo diet good for you? Studies have shown a range of benefits in those who have adopted this diet, especially if they already had health problems, including weight loss, lower blood pressure and better management of diabetes. Many of these benefits are likely to be a result of decreasing the intake of carbohydrates and processed foods. However, research has shown that the advantages of the Paleo diet are not real. Following a restrictive diet that suggests cutting out whole grains and dairy can also lead to vitamin and mineral lack.

What is the author’s attitude towards the Paleo diet?

Three astronauts stationed in China’s Tiangong space station are preparing for their return trip in the middle of April, packing up personal items, experimental products and other materials, putting equipment into place and exercising to prepare their bodies for Earth’s gravity.

The astronauts, Zhai Zhigang, Wang Yaping and Ye Guangfu, have to tidy up a large number of materials, including goods on the Tianzhou 3 cargo spacecraft, said Zhong Weiwei, an associate researcher at the China Astronaut Research and Training Center.

Living in space about six months, a record in China’s history, they have completed more than 20 scientific tasks and will bring back samples with them, according to Zhong.

The physical conditions and psychological states of the three astronauts are better than expected, meeting the requirements for a return trip, said the associate researcher from the center’s aerospace medical engineering office.

Based on their in-orbit physical examinations and data, experts have adjusted exercise plans for them to keep fitness in order to ensure a safe landing, Zhong said.

Besides their tasks, they have also delivered two live lectures from the space station, showing the students their living and working areas at the Tianhe core module and several scientific experiments under zero-gravity conditions and answering real-time questions from students.