Where does water come from?

That’s not just a little kid question but a genuine scientific mystery.  In the early days of earth’s existence, according to scientists, the planet was just too hot for there to be water.  After things cooled down, there still would have been no water.  Comets have been discovered that have water vapor, so the leading theory has been that comets bombarded the earth and gave us the oceans.

But now a study has found that comet water is, for the most part, very different from earth water.  Another candidate now is asteroids.  But it’s hard to imagine how many comets or asteroids–which may have some water, but not all that much–it would take to create earth’s vast oceans. [Read more...]

Humanized mice

Researchers have injected brain cells from human fetuses into baby mice, giving them brains that are half human.  Those “humanized mice” are much more intelligent than regular mice.  Read the report, which is breezily free of moral judgment, and contemplate just how many things are wrong with this. [Read more...]

Be thankful for rivers

Why has America, among all the world’s nations, always been so prosperous?  Lots of reasons.  But, according to a new book, it begins with our rivers. [Read more...]

Landing on a comet

A probe from the European Space Agency landed on a comet, an object just two and half miles wide, 300 million miles away.  That’s quite a feat of engineering.

The Philae lander beamed back images showing one of its three feet on the surface of Comet 67P/Churyumov-Gerasimenko . This photo is compiled from two images; a wider version will be released later Thursday.

[Read more...]

Why do people like to be scared?

Dr. Margee Kerr is a “scare specialist.”  In addition to college teaching, she is the staff sociologist at ScareHouse, a “haunted house” in Pittsburgh, which apparently consults her scientific expertise in designing effects that scare people.  The Atlantic interviews her on the question of why some people like to get scared. [Read more...]

Blood transfusion

The nurse who recovered from Ebola had received a blood transfusion from Dr. Kent Brantly, that first American missionary doctor who contracted the disease but survived.  So far, he has given about a gallon of his blood to others with the disease, and it seems to be helping.  The recipients and the donor must have compatible blood types, but the antibodies that successfully killed the virus in the survivor can be transferred into another person’s body.

I can’t resist the comparison to the blood of Christ.  He bore the disease of sin in His body and went so far as to die from it, though that particular virus was ours, not His.  But He rose from the dead.  Now His blood is our cure.  He gives us a blood transfusion:

And he took a cup, and when he had given thanks he gave it to them, saying, “Drink of it, all of you, for this is my blood of the covenant, which is poured out for many for the forgiveness of sins.” (Matthew 26:27-28) [Read more...]


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