Earth Science Weekly Newsletter - Wednesday, April 29, 2015

Earth Science newsletter

Top new questions this week: Why is relative sea-level falling in Hudson Bay? Why is the sea level in Hudson Bay decreasing so much? Hudson Bay is pretty far up north, much closer to glaciers. Would it make sense for it to recede at this level with sources of fresh water ... geology oceanography sea-level ice-sheets glaciation   asked by Lucian09474 14 votes answered by kwinkunks 20 votes Is continental drift caused by lava pushing the seabed apart? My daughter has a writing assignment based on a handout about plate tectonics. One paragraph says: Molten rock from the earth's mantle pushes up through the surface at the mid-Atlanic ridge. The ... plate-tectonics   asked by mattdm 8 votes answered by kwinkunks 11 votes How much land does it take to support New York City? New York City has about 8.5 million people living in an area of 300 square miles which gives a population density of 28,300 people per square mile. The food required to support such a high population ... human-influence water land-surface   asked by Chris Mueller 8 votes answered by gerrit 9 votes What causes the colors seen during a sunset / sunrise? What causes the typical red, pink or orange colors seen in sun-rises and sun-sets? How come the sky doesn't just turn a darker blue? atmosphere light   asked by Azzie Rogers 8 votes answered by Fred 7 votes Nepal earthquake of 25 April 2015 On the 25th of April at about 11-12pm, an earthquake whose epicenter was in Nepal was felt with a magnitude of 7.5 in Delhi NCR, as well as in other Indian states (Rajasthan, Bihar, Jharkhand, and ... earthquakes   asked by Ravi PK 7 votes answered by Fred 6 votes How big is the influence of tree leaves on global windsystems? As anybody knows, there are a lot of forests. I stumbled upon the question whether these have any effect on the global wind-systems. Imagine the following situation. All trees suddenly die in an ... meteorology hypothetical   asked by J_F_B_M 7 votes answered by Fred 3 votes Where does the 2015 Nepal earthquake rank amongst earthquakes since 1900? Wikipedia provides a list of deadly earthquakes since 1900. Where would the April 2015 Nepal earthquake (magnitude currently estimated as 7.8 or 8.1) rank in this list, in terms of magnitude? seismology earthquakes seismic-hazards   asked by Anjil 5 votes answered by kwinkunks 7 votes Greatest hits from previous weeks: What would be the first thing which will render the Earth uninhabitable? There are quite a few things which can make an otherwise habitable planet uninhabitable, and some of these will eventually happen, sooner or later: engulfed by its star when it becomes a red giant ... geophysics hypothetical   asked by vsz 16 votes answered by HDE 226868 23 votes Academic but accessible defense of the scientific understanding of anthropogenic climate change? I'm an intelligent and well-educated guy, but all of my schooling has been in economics, statistics, and public policy. I'm interested in reading a thorough explanation/defense of the scientific ... climate-change human-influence   asked by John Chrysostom 11 votes answered by EnergyNumbers 18 votes

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