The constant rise of global demand for protein poses a threat of meat shortage in the agricultural sector. To address this, a few scientists use artificial meat as an alternative to traditional ones, which from the growing process to its benefits proves it does no harm or even it does good to us.
Currently, one of the most advanced techniques to grow meat in the lab involves taking cells from an animal and changing them to muscle cells. The cells are then cultured with nutrients and essential vitamins and can be developed to any quantity and then shaped into hamburgers, steaks or mince, and so it is also called “cultured” meat. “Cultured meat is not genetically engineered,” Dr. Mark Post of Maastricht University says. “It is meat grown from the same cells that produce the meat in the cow, but this time outside the cow.” He believes that cultured meat shouldn’t be any better or worse for you than old-school animal flesh.
This may sound like science fiction, but it is not such a strange idea and there are reasons to be excited about it. “The environment impacts of cultured meat could be lower than those of meat produced in the conventional way,” said Hanna Tuomisto, a researcher at Oxford University. The process would require between 7% and 45% less energy than the same volume of conventionally produced meat such as pork, beef or lamb, and could be engineered to use only 1% of the land and 4% of the water associated with conventional meat. Tuomisto’s research also shows that cultured meat could be part of the solution to feeding the world’s growing population, at the same time cutting emissions and saving both energy and water.
Aside from the above benefits, cultured meat should also provide cheap nutrition. Animal protein is an increasing part of diets, as millions of people in rapidly emerging economies are drawn out of poverty and become able to afford more meat in their diets. The pressure this creates has been an important factor in rapidly rising grain prices, deforestation in the Amazon basin, increasing water shortage and rising pressure to find new farmland. Growing meat artificially could potentially take huge pressure off farmlands around the world.
Another benefit would be to help animal welfare and protect endangered species. If most of our meat was grown, there would be no need for factory farms. Conditions for animals could be greatly improved. Elsewhere, it could also stop illegal endangered species hunts by providing an alternative way to produce meat form these species.
Exactly how long it takes before the meat is sold in supermarkets depends on the investment in research and development. One thing seems clear: Unless vegetarianism catches on in a very big way, the world’s demand for meat will soon outpace our supply of cows, chickens, pigs and other edible animals. The health and environmental impacts of cultured meat aren’t going to be hypothetical for much longer.
【小题1】What does the underlined word “cultured” probably mean?| A．grown. | B．sorted. | C．connected. | D．shaped. |
| A．tastes much better | B．contains more nutrients |
| C．saves more natural resources | D．changes people’s habit of eating meat |
| A．comparing the results from different researches |
| B．explaining the advantages of the artificial meat |
| C．presenting the problems caused by meat shortage |
| D．showing the current situation of food consumption |
I: introduction P: point SP: sub-point C: conclusion
A． | B． |
C． | D． |
