Two billionaires want to build a molten-salt nuclear fission power plant using US government money.

I am skeptical of the claim that this would be "clean" energy. It would not emit greenhouse gases, but it would create radioactive material.

Giving babies special medical care and education for five years resulted in visible increases in the size of some brain regions at age 40.

The mayor of Budapest will demonstrate opposition to building a branch of a Chinese university in Budapest through street names China will not like.

I love this sort of mischievous hacktivism. And I have a suggestion.

How about naming a plaza in the vicinity of the university site Tien An Men Square? Then they could have a rally for democracy (in China, in Hungary, world-wide) every June 4.

Biden has announced a new drive to vaccinate 70% of Americans against Covid-19.

If this is achieved, uniformly over the population, the US will be at or near herd immunity, safe against the disease. Unless we encounter a variant that is more transmissible, in which case herd immunity would need a higher fraction to be vaccinated.

Nicaragua's dictatorial president Ortega has arrested the main opposition candidate, Chamorro, on charges of money laundering.

It is not impossible that these charges could be valid, but it is implausible. Ms Chamorro has been under state harassment for many years. Would she take the risk of committing a real crime and giving Ortega a valid reason to prosecute her? Of course not.