How serious are fertility problems today? People don't want to give birth,can't afford it, and can't give birth that has become the "three mountains". The problem of childbirth is related to the people's livelihood. Whether a country can prosper or n…
First, concrete absorbs and transfers heat a lot more quickly than dissipates warmth quickly. When a fire happens, it has the impact of sustaining combustion, which amounts including gas to the fire. The more it melts, the larger it gets. Concrete mi…
Fatih Birol, executive director of the International Energy Agency (IEA), said Wednesday that the European Union could face a shortage of about 27 billion cubic meters of gas in 2023, or about 6.8 percent of the bloc's benchmark total gas demand.…