LINGUAGGIO MACCHINA

Un antenato comune per tutte le piante. La scoperta, pubblicata su Science il 17 febbraio 2012, è di un gruppo di ricercatori guidati da Frederick W. Spiegel (University of Arkansas), i quali hanno analizzato il DNA di un'alga primitiva, la Cyanophora paradoxa. L'antenato (o antenata: per questo non so se chiamarlo, giornalisticamente, Adamo o Eva delle piante) si sarebbe formato dalla fusione tra un cianobatterio (batteri produttori di ossigeno) e un plastidio (organuli semi-autonomi, in quanto dotati di DNA, caratteristici della cellula vegetale). Meet Plants' and Algae's Common Ancestor (University of Arkansas, February 17, 2012)

Two major problems facing the physical world today can be broadly categorized into: (1) how to increase the amount of consumable energy available for the worlds needs and (2) how to decrease the amount of greenhouse gases produced. Of course, these problems are negatively linked together inasmuch as, without further offsets, an increase in the production of carbon fuels leads to an increase in the amount of greenhouse gases produced when these fuels are consumed. In this video we shall look at a method that breaks this negative link by considering a project that increases the worlds supply of oil using biofuels and which at the same time decreases the amount of atmospheric carbon dioxide used during its production. The resulting product is a sustainable biofuel whose carbon footprint is neutral inasmuch as the CO2 produced on consumption is essentially balanced by the CO2 used in its production. Michael Fischer (Stanford University) Instructions here: An Algae Bioreactor from Recycled...