Food security - A growing dilemma | DW Documentary

2024/04/2302:44:04 science 287445

Food security - A growing dilemma | DW Documentary - DayDayNews

Food security - A growing dilemma | DW Documentary - DayDayNews

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91 In addition, because foragers do not rely on a single type of food, even if a certain food source is cut off, the impact will not be too great. But if it is an agricultural society, once a drought, fire, or earthquake occurs and all the rice or potatoes of that year are destro - DayDayNews

91 In addition, because foragers do not rely on a single type of food, even if a certain food source is cut off, the impact will not be too great. But if it is an agricultural society, once a drought, fire, or earthquake occurs and all the rice or potatoes of that year are destro

A Brief History of Humanity: From Animals to God (9)

05/27 1836

Shuangliu Integrated Media All-Media Reporter Wang Rong Wu Haoyan Text/Picture to further open up the cooperation channels of "government, industry, learning, research, and application" between schools and colleges to stimulate the vitality of the rich scientific and technologica - DayDayNews

Shuangliu Integrated Media All-Media Reporter Wang Rong Wu Haoyan Text/Picture to further open up the cooperation channels of "government, industry, learning, research, and application" between schools and colleges to stimulate the vitality of the rich scientific and technologica

Science and Technology Innovation Elite Gathering: Institutions and localities work together to promote the transformation of scientific and technological achievements

05/28 1279

The acidic thickener has no cloud point and is a light yellow to amber viscous liquid. It is easily soluble in water and is a nonionic surfactant. When the anionic surfactant is acidic, the thickening effect is particularly obvious when combined with it. It can be used with Compa - DayDayNews

The acidic thickener has no cloud point and is a light yellow to amber viscous liquid. It is easily soluble in water and is a nonionic surfactant. When the anionic surfactant is acidic, the thickening effect is particularly obvious when combined with it. It can be used with Compa

What products are popular science acid thickeners in use? Their characteristics are:

05/28 1221

As summer approaches, ozone pollution occurs more frequently. Because it is not as easy to detect as PM2.5 and haze pollution, which affect visibility, it is often ignored by the public. To this end, Professor Hu Min’s team from the School of Environmental Science and Engineering - DayDayNews

As summer approaches, ozone pollution occurs more frequently. Because it is not as easy to detect as PM2.5 and haze pollution, which affect visibility, it is often ignored by the public. To this end, Professor Hu Min’s team from the School of Environmental Science and Engineering

"Environmental Protection Science" What is ozone pollution?

05/28 1811

According to a recent article published in the British magazine "Nature", meteorologists have predicted La Niña for the third consecutive year, that is, a rare "triple" La Niña climate event may occur. - DayDayNews

According to a recent article published in the British magazine "Nature", meteorologists have predicted La Niña for the third consecutive year, that is, a rare "triple" La Niña climate event may occur.

A rare "triple" La Niña climate event may occur. What impact will it have on my country's climate? China Meteorological Administration responded

05/28 1474

As of July 2, researchers from various countries have discovered a total of 85 genetic sequences of the BA.2.75 variant in international new coronavirus genome databases such as "GISAID". This variant first appeared in the genetic sequence from India in early June, and then quick - DayDayNews

As of July 2, researchers from various countries have discovered a total of 85 genetic sequences of the BA.2.75 variant in international new coronavirus genome databases such as "GISAID". This variant first appeared in the genetic sequence from India in early June, and then quick

[Epidemic Prevention and Control] Be alert! It has appeared in many countries and spreads faster

05/27 1214

[CNMO News] Human beings have always been curious about the universe beyond the earth. This endless curiosity drives us to continue exploring extraterrestrial planets and even extraterrestrial life. When it comes to which country on earth is the most enthusiastic about extraterre - DayDayNews

[CNMO News] Human beings have always been curious about the universe beyond the earth. This endless curiosity drives us to continue exploring extraterrestrial planets and even extraterrestrial life. When it comes to which country on earth is the most enthusiastic about extraterre

The United States plans to develop micro-swimming robots to find extraterrestrial life

05/28 1271

In the world of plants, there are always plants you don’t know. While admiring plants in the park, I found a tree with light pink flowers that looked like strips of flowers. It is eye-catching and pity-inducing. I thought it was very novel. I stopped to watch and admire it for a - DayDayNews

In the world of plants, there are always plants you don’t know. While admiring plants in the park, I found a tree with light pink flowers that looked like strips of flowers. It is eye-catching and pity-inducing. I thought it was very novel. I stopped to watch and admire it for a

The auspicious flower tree of "reconciliation and family happiness"

05/27 1014

Deep sea phobia is a type of phobia. When patients imagine, see or come into contact with ocean-related things such as the sea, big waves, marine life, etc., they will have rapid breathing, rapid heartbeat, cold sweats, trembling hands and feet, and want to exert all their streng - DayDayNews

Deep sea phobia is a type of phobia. When patients imagine, see or come into contact with ocean-related things such as the sea, big waves, marine life, etc., they will have rapid breathing, rapid heartbeat, cold sweats, trembling hands and feet, and want to exert all their streng

What is bathophobia? Genetic fear

05/27 1421

"Xiyan Teahouse" Issue 366. Wild plants are common in Anding areas. Perennial herb, 5 to 30 cm tall, with stems branching from the base, and some with remaining petioles at the base. - DayDayNews

"Xiyan Teahouse" Issue 366. Wild plants are common in Anding areas. Perennial herb, 5 to 30 cm tall, with stems branching from the base, and some with remaining petioles at the base.

Zhang Lan/Common wild plants in Anding District (31) "Xiyan Teahouse" Issue 566

05/27 1479

The vastness of the universe is beyond human imagination. But we humans spend all our energy fighting and fighting with our fellow humans for some things. A brief look through this telescope will tell us that those things are trivial. The book "A Hundred-Year Adventure in the Uni - DayDayNews

The vastness of the universe is beyond human imagination. But we humans spend all our energy fighting and fighting with our fellow humans for some things. A brief look through this telescope will tell us that those things are trivial. The book "A Hundred-Year Adventure in the Uni

"A Hundred-Year Adventure of the Universe": Follow astronomers to explore the mysteries of the universe

05/29 1717

The new pentaquark, illustrated here as a pair of standard hadrons loosely bound in a molecule-like structure, consists of a charm quark and a charm antiquark as well as an up, a down and a strange quark. Image credit: CERN International Large Hadron Collider (LHCb) Three never-b - DayDayNews

The new pentaquark, illustrated here as a pair of standard hadrons loosely bound in a molecule-like structure, consists of a charm quark and a charm antiquark as well as an up, a down and a strange quark. Image credit: CERN International Large Hadron Collider (LHCb) Three never-b

Science Discovery: Three new exotic particles discovered with the Large Hadron Collider

05/29 1450

[Source: Xiaoshan Disease Control] Ultraviolet (Ultraviolet, UV) is invisible light with a higher frequency than blue-violet light. - DayDayNews

[Source: Xiaoshan Disease Control] Ultraviolet (Ultraviolet, UV) is invisible light with a higher frequency than blue-violet light.

How to effectively protect against UV rays in summer?

05/29 1174

Among the celestial bodies in the universe, there is a huge force among the planets, constellations, and star groups, that is, "universal gravity" (discovered by the British scientist Newton), which pulls and connects each other, and is fixed in a certain position and cannot be s - DayDayNews

Among the celestial bodies in the universe, there is a huge force among the planets, constellations, and star groups, that is, "universal gravity" (discovered by the British scientist Newton), which pulls and connects each other, and is fixed in a certain position and cannot be s

star of the galaxy - the sun

05/29 1020

We ordinary people's understanding of time is that it keeps moving forward without an end. The famous Jewish physicist Einstein and our country's Shi Yigong have similar views on the concept of time. They believe that time is just human perception and an illusion. Because humans - DayDayNews

We ordinary people's understanding of time is that it keeps moving forward without an end. The famous Jewish physicist Einstein and our country's Shi Yigong have similar views on the concept of time. They believe that time is just human perception and an illusion. Because humans

Both Einstein and Shi Yigong believed that time does not exist. Scientists conducted experiments on women for 130 days.

05/29 1450

Author | Chen Zhihan Source | Science and Technology Publicity Cultural Resource Library As the saying goes, "mentality determines age," and more and more studies have proven that this statement is true. The younger you feel, the faster you will recover from your illness. Recentl - DayDayNews

Author | Chen Zhihan Source | Science and Technology Publicity Cultural Resource Library As the saying goes, "mentality determines age," and more and more studies have proven that this statement is true. The younger you feel, the faster you will recover from your illness. Recentl

Stop saying you are old! The younger you feel, the healthier you are, study says

05/29 1274

What needs to be pointed out is that paintings such as Japanese warplanes invading China, stars and stripes clothes, and upside-down national flags were blatantly transferred to the textbooks for primary and secondary school students, and the textbooks for primary and secondary s - DayDayNews

What needs to be pointed out is that paintings such as Japanese warplanes invading China, stars and stripes clothes, and upside-down national flags were blatantly transferred to the textbooks for primary and secondary school students, and the textbooks for primary and secondary s

Analyze the consequences of large-scale Chinese education

05/29 1962

A typical case is Xiao Huang, a senior investor. At the beginning of the year, Xiao Huang received a phone call. The other person claimed to be a staff member of a securities company and said that the company had set up a stockholder exchange group and that his company also arran - DayDayNews

A typical case is Xiao Huang, a senior investor. At the beginning of the year, Xiao Huang received a phone call. The other person claimed to be a staff member of a securities company and said that the company had set up a stockholder exchange group and that his company also arran

Quickest way to get money? The worst lie to you! How deep are the financial fraud schemes?

05/29 1665

After various hot topics emerged one after another, the issue of textbooks became less popular and even became silent, with no one discussing it anymore. However, whether there is discussion or not, the problem is there, no more, no less. - DayDayNews

After various hot topics emerged one after another, the issue of textbooks became less popular and even became silent, with no one discussing it anymore. However, whether there is discussion or not, the problem is there, no more, no less.

The problem of textbook illustrations continues, and the content and pictures of teaching aids are ugly. The reasons behind it are very practical.

05/29 1276

On July 5, a Red Star News reporter learned from Sichuan Agricultural University’s new round of “double first-class” discipline construction promotion meeting that the school signed five cooperation agreements with enterprises, universities, and government departments on site to - DayDayNews

On July 5, a Red Star News reporter learned from Sichuan Agricultural University’s new round of “double first-class” discipline construction promotion meeting that the school signed five cooperation agreements with enterprises, universities, and government departments on site to

Sichuan Agricultural University will build a modern industrial college and a smart agricultural innovation laboratory

05/29 1134

More than 1,500 elderly people were defrauded of nearly 2 billion! On May 19, the Higher People’s Court of Jiangsu Province, the People’s Court of Gulou District of Nanjing City, the People’s Court of Gusu District of Suzhou City, and the People’s Court of Wujiang District of Suz - DayDayNews

More than 1,500 elderly people were defrauded of nearly 2 billion! On May 19, the Higher People’s Court of Jiangsu Province, the People’s Court of Gulou District of Nanjing City, the People’s Court of Gusu District of Suzhou City, and the People’s Court of Wujiang District of Suz

More than 1,500 elderly people were defrauded of nearly 2 billion! Fraudulent tactics exposed! Forward to parents quickly

05/29 1894

“Subscribing internal employee shares at low prices guarantees you a steady profit without losing any money.” “The boss has 7 apartments, and there is no risk of running away.” “You invest for me, and I will take care of you!” “Not only can you live in a nursing home, but you can - DayDayNews

“Subscribing internal employee shares at low prices guarantees you a steady profit without losing any money.” “The boss has 7 apartments, and there is no risk of running away.” “You invest for me, and I will take care of you!” “Not only can you live in a nursing home, but you can

More than 70 million yuan was involved in the case. Such "investment for retirement" is not credible! The judge takes you through the six tricks of fraud

05/29 1128