In each cell in your body, and in that of every living thing, there exists a tiny motor named ATP synthase that Science News1 calls “the ultimate molecular machine.” It converts electrical to chemical energy, writes Alexandra Goho, “with amazing efficiency.” Now, Japanese have harnessed some of these motors (only 12 millionths of a millimeter high) to power artificial machines. They attached hundreds of the motors to a glass surface and attached little magnetic beads to the rotor part. With an electromagnet, they induced them to spin, and were able to make them rotate both clockwise and counterclockwise.1Alexandra Goho, “Nature’s tiniest rotor runs like clockwork,” Science News, Week of Feb. 7, 2004; Vol. 165, No. 6, p. 94; see also article by Jessica Gorman, “Nanotech Switch: Strategy controls minuscule motor,” Science News, Week of Nov. 9, 2002; Vol. 162, No. 19.Biochemists and nanotechnologists are rightly fascinated by these nanoscopic machines, but strangely silent about where they came from. They want to know what they can do with them, but where did they come from? They hope they can borrow them for all kinds of nanodevices, but where did they come from? Suppose we were members of a Star Trek crew from a distant galaxy, and had just landed on Mars. We find this little rover with solar panels and wheels and instruments, and all we can think about is how we can play with it. Wouldn’t some sentient being on the crew be thinking, Where did it come from?Exercise: if aliens found Spirit or Opportunity on Mars, would they be justified in inferring intelligent design for its origin, even if they knew nothing about the designers? Why or why not? If scientists found an ATP synthase motor in the desert, but instead of being nanoscopic it was the size of a cement mixer, would they be justified in thinking it had evolved from the sand? Support your answers. We’ve had many previous headlines on ATP Synthase. You can start at the 09/18/2003 article and work back through the links for more information.(Visited 15 times, 1 visits today)FacebookTwitterPinterestSave分享0
Share Facebook Twitter Google + LinkedIn Pinterest Akron’s very own Public Food Market in Downtown’s Northside District is holding an opening day event Oct. 28.With support from Knight Foundation, Countryside has begun the transformation of the Northside Loft’s former parking garage into a fun, indoor, food-centric space for everyone to enjoy the flavor of Ohio’s local food offerings. Countryside Public Market will provide over 40 small businesses economic opportunity and direct consumer access. In addition, the market will provide food assistance programing for families and individuals, giving everyone access to fresh, healthy, local food.Countryside is leasing this nearly 10,000 square foot space from Testa Companies after brainstorming with building owner, Joel Testa.“We are extremely excited to welcome Countryside to the Northside Marketplace. This is the final piece in a longtime vision to bring fresh, local foods and opportunities for small vendors and retailers to the downtown Akron market. We are looking forward to the many opportunities that this new partnership can bring as we create a vibrant place to live, work, and play in Downtown Akron,” Testa said.The project is scheduled to evolve in phases over the next eighteen months, with the grand opening of the first phase this fall. Every Sunday morning Countryside will bring local farmers and food producers to the Northside District from 10 a.m. to 1 p.m.“Drawing people out of their homes and into the community is vital to promoting a vibrant public life in Akron and creating the incentives that will keep and attract people to the city,” said Kyle Kutuchief, Knight Foundation program director for Akron. “The Public Food Market will help to advance this goal, providing a place to showcase homegrown talent and connect residents to the city and each other.”The space will also host regular food experiences including tastings, farm-to-table dinners, food entrepreneur education, CSA pick-ups, and more. In the future, the market will be open multiple days per week offering fresh local produce, meats, baked goods, candies, cheese, dairy, flowers, herbs, jams, sauces, locally crafted beverages, hand-made kitchenware, morning brunch, and a smattering of local artisans’ works.Countryside Public Market will be a year-round place for residents and visitors of Akron to get healthy, fresh, local food in a space that is welcoming and fun for everyone.“The potential here is amazing. I envision this project as a way to support Countryside’s long-term viability while expanding our mission deeper into the City of Akron. Food is a catalyst for community building and Countryside is thrilled to be part of the Akron community,” said Tracy Emrick, Countryside executive director.
MONTEGO BAY – Mayor of Savanna-La-Mar, Bertel Moore, is appealing to persons setting illicit fires to cane fields across the parish to desist, as they are harming the industry. “It is high time for citizens of the parish, who are engaged in these unlawful activities year after year, to understand the serious and irreparable damage to the sugar industry and to the livelihood of small farmers,” he stated at a recent meeting of the Westmoreland Parish Council. Over the last few years, a number of cane fields in the parish have been burnt by arsonists. The fires have had a devastating effect, especially on small farmers, as often, the fields are not ready to be reaped. A total of 57 cane fires were reported during the month of December 2012 alone, and since January, the fire service has been responding to cane fires every day. “Sometimes, the fields are set on fire when they are far from ready to be reaped and this poses a problem because the amount of sugar that is produced from these immature canes is not adequate,” Mayor Moore stated. He said that all citizens should accept responsibility for protecting the industry, which is a significant employer of labour. “I would like all citizens and farmers across the parish to understand that if our industry does not produce the amount of sugar to satisfy the market, then other countries will take our place. This would then put us at the bottom of the ladder and we would eventually lose the market. “As we make efforts to create more employment for our people, let’s unite and protect the sugar industry as we want to move forward and not backward. Let’s keep our sugar cane industry on top,” Mayor Moore urged.