Immigration from Africa

Recently, the problem of immigration from Africa crossing the Mediterranean Sea to find asylum in Europe gets more and more serious. Southern countries directly affected by this problem call for solidarity and to take some of the immigrants to other EU states.

How many? Do you realize the scale of the problem? In 2010, in North Africa, the Middle East and Turkey, there were a total of 488 million people. According to demographic projections, in 2050 there will be 774 million. Even more dramatically increases the number of population of sub-Saharan Africa – from 831 million in 2010 to 2 075 million (yes, more than 2 billion) in 2050. For comparison: the European Union in 2013 had 507 million inhabitants and by 2050 that number will decline slightly.

Now, we already have an exodus, imagine how demographic pressure will increase – because there’s no sign of ending the poverty or conflict in Africa, and they’ll have to deal with increasing climatic problems. So, how many will be willing to migrate and how much we are to allow to our countries? Is there a long-term plan? Nothing can be heard about it, the actions proposed by the EU’s look like fire fighting – as if they could extinguish it.

Settling these immigrants here in Europe is a road to nowhere – the more we take, the more arrives – because previous ones succeded, because they’ll want to reunite with their families, because if the smugglers are going so rich, why not to be a smuggler. Our social assistance systems have a limited budget, however, and are already hardly able to cope with pensions, benefits are low and Health Care – underfunded. Shall we finish it off with the growing number of needy who do not add to the system?

This problem can not be solved in Europe. We have to solve it in Africa, to make people not want to run away from there. On the one hand, this requires economic aid but on the other also firmness – eg. help in disarming the militias and warlords.

Brown dwarf in place of Jupiter

Some time ago a friend asked me, what would happen if instead of Jupiter there was a brown dwarf in Solar System.

Brown dwarfs are a kind of “failed stars”. They are celestial bodies with masses which lie between the stars and gas giant planets. Their weight are between 13 to 75-80 Jupiter masses. So, assuming the lightest possible brown dwarf (not smallest because gas giants and brown dwarfs do not differ too much in size – it’s the result of compression of gas in their atmospheres under the high gravity) – what would be its impact on the Solar System? In particular, the Earth? Continue reading Brown dwarf in place of Jupiter