Showing posts with label food. Show all posts
Showing posts with label food. Show all posts

Monday, August 8, 2016

Starving Spiders


The spider species, Anelosimus eximius, lives in South America in large colonies. Some of these colonies consist of tens of thousands! Their colonies grow to be so large because the spiders will remain in the nest in which they were born from one generation to the next. These species nest together, create a web together, and capture their prey together. The problem comes when the colonies become too large because these spiders eventually run out of food. The lack of food leads to massive die-offs. The problem also arises when the spiders capture prey that is far too big for any one spider to feed on. This overshare of food is a danger to the species. Researchers have found that about 21% of these colonies go extinct every generation. 

Monday, August 1, 2016

Nobel Laureates Take a Stand for GMOs



110 of the world's 300 living Nobel Laureates recently signed a letter directed at the global NGO Greenpeace demanding that the group backdown on their stance against genetically modified organisms (GMO). The letter was prompted because Greenpeace has continually blocked the introduction of a genetically engineered (GE) strain of rice called "Golden Rice" that could vastly reduce the number of Vitamin-A deficiencies (VAD) in the developing world.

According to the World Health Organization, VAD impacts an estimated 250 million people worldwide by compromising a person's immune system, resulting in blindness or death. Its' greatest impact can be seen on the poorest people of Africa and Southeast Asia. UNICEF statistics suggest that one to two million preventable deaths occur globally each year as a result of VAD, especially among infants and children. Golden Rice contains higher levels of Vitamin-A than normal strains of rice, and could therefore help combat the deficiencies, as those most affected consume rice as the mainstay of their diet.

Nobel laureate Randy Schekman, a cell biologist at UC Berkeley stated:
“I find it surprising that groups that are very supportive of science when it comes to global climate change, or even, for the most part, in the appreciation of the value of vaccination in preventing human disease, yet can be so dismissive of the general views of scientists when it comes to something as important as the world’s agricultural future.”
Most scientists believe that gene editing in a laboratory is no different and poses no greater threat to humans than selective breeding that has gone on for centuries. Additionally, GE plants can reduce the need for pesticides on crops (among other advantages), providing health and ecological benefits.

Greenpeace responded to the letter through their Southeast Asia campaigners, countering with the argument that:
“Corporations are overhyping ‘Golden’ Rice to pave the way for global approval of other more profitable genetically engineered crops. This costly experiment has failed to produce results for the last 20 years and diverted attention from methods that already work. Rather than invest in this overpriced public relations exercise, we need to address malnutrition through a more diverse diet, equitable access to food and eco-agriculture.”
Obviously, the debate between scientists and activists over GMOs is not a new phenomenon, nor does it appear that this letter will persuade GMO opponents to end their fight.

https://www.washingtonpost.com/news/speaking-of-science/wp/2016/06/29/more-than-100-nobel-laureates-take-on-greenpeace-over-gmo-stance/

Thursday, May 12, 2011

Warmer Weather Responsible for Increased Prices in Food

According to an article in Science News analysts are blaming warmer temperatures for a decrease in global production of corn and wheat. Farmers around the world have produced 3.8% less corn and 5.5 % less wheat between 1980-2008. This loss in production has created an increase in the price.
The price of corn has risen 6.4% and the price of wheat has risen 18.9% since 1980. Technological advances have increased production of corn and wheat, but according to David Lobel a land-use scientist at Stanford University farmers could have produced a lot more food if the weather was cooler. " For every decade of climate change, it sets you back a year."
These factors coupled with pollution which is linked to global warming will have a detrimental effect to our food sources in the future. Hopefully we will be able to find better sources of energy that are less harmful to our environment.