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As a moderator of this community, I feel that Google+ needs some really important features to avoid spam. I've already posted them in "feedback / feature request" but Google being Google won't implement it unless a lot of people post the same request. These feature requests are:

0) Posting limit at a given time. There should be a difference of at least 5 mins between postings from the same user. Google should block users from posting for 5 mins after every post. *This will be magical*.

1) Blacklisting and whitelisting Domains. Some good urls fall into spam while bad ones in community.

2) Whitelisting users. They already give an option to ban users so it's the same as blacklisting. Some users always post relevant contents but their posts fall into spam. This hurts community.

*Please share this with other community moderators as well*. You can just copy paste these points in feature request. Make sure to post these three separately as Google takes one suggestion at a time. So, if you paste exactly this, it'll take the first point only. Adios!

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The Speed of a Quantum Leap

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I just thought of something if we go to Mars and start planting crops we cannot just stick a seed into Martian soil... We're going to have to import all the Earth soil bacteria also.... Plants need bacteria and other organisms in the soil in order to grow!

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Today on the 25th of September 1920, Satish Dhawan was born. He is considered as the father of experimental fluid dynamics research in India.
He was an Indian mathematician and aerospace engineer. Born in Srinagar, Dhawan was educated in India and further on in the United States. Dhawan was one of the most eminent researchers in the field of turbulence and boundary layers, leading the successful and indigenous development of the Indian space programme. He succeeded Vikram Sarabhai, as chairman of the Indian Space Research Organisation (ISRO) in 1972.
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FlexPDE.. animation of a potential field. I added a time dependence to illustrate evolving potential fields ..but since the equations, divergence is actually NOT time dependent, but static...I just wanted to see what would happen if I used a time dependence...and well you see. Pretty cool.. nothing happened...lol

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