Chemistry

Originally Published by ScienceDaily<

– Engineering researchers have produced the first experimental results showing that atomically thin graphene membranes with tiny pores can effectively and efficiently separate gas molecules through size-selective sieving.

There are two main reasons why sea level is rising as the world gets warmer. First, as ice sheets and glaciers melt, they send ice and water pouring into the oceans. But another reason is that water, like most substances, expands as it heats up — and as greenhouse gases warm the atmosphere, some of that heat is slowly warming the oceans as well. Scientists understand the expansion of water really well; you can look it up in a textbook. It is much harder to predict what will happen to the ice, though. 

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The poor villagers of Kaniche in Malawi can’t afford to buy fertilizer. That’s why villager elder, Chair of the Village Development Committee, local headman and community mason Mr. Khombe has built 30 ecosan latrines for his neighbours.