In the 1960s and '70s, population bomb reality was said to be as settled as climate change is today. No less than Dr. John Holdren, current Obama administration Science Czar, co-authored a book called Ecoscience, which argued that forced sterilization and mass abortions might  be necessary, and even viable under the equal protection clause of the Constitution.

The first images of a nova during its early fireball stage - when it ejects material and gases expand and cool - have been delivered from a nova that erupted last year in the constellation Delphinus.  

A nova occurs after a thin layer of hydrogen builds up on the surface of a white dwarf--a highly evolved star with the mass of the sun packed into the volume of the Earth. A normal star accompanies the white dwarf in a binary star system, providing that hydrogen as the two stars orbit each other.

Not everyone who contracts the Ebola virus dies, the survival rate is actually around 30%, which means some kind of immunity to the disease is possible.

Experimental treatments and vaccines against Ebola exist but there was little interest from governments in streamlining the bureaucracy before the recent outbreak, so they have not undergone phase 2 trials - the U.S. Congress did add $90 million to the $29 billion budget of the National Institutes of Health after Director Francis Collins said money was the thing that had prevented a vaccine in the past. 

By Simon Redfern, University of Cambridge

How is it that Earth developed an atmosphere that made the development of life possible? A study published in the journal Nature Geoscience links the origins of Earth’s nitrogen-rich atmosphere to the same tectonic forces that drive mountain-building and volcanism on our planet. It goes some way to explaining why, compared to our nearest neighbors, Venus and Mars, Earth’s air is richer in nitrogen.

By Ingrid Sharp, University of Leeds

The idea of a war hero is still strong in the UK and in the other Allied countries.

War memorials are a central feature of the regular commemoration services, Churchill is regularly rolled out in biographical and fictional form, and there are soon to be a total of 888,246 ceramic poppies for 888,246 war heroes adorning the Tower of London.

A novel method to test for vitamin B12 deficiency is sensitive enough to work on anyone, including newborn babies and large swaths of the general population. It uses a single drop of blood collected from a finger prick which is then blotted and dried overnight on a card consisting of filter paper.

The dried blood spot card analysis is sensitive enough to measure the amount of methylmalonic acid (MMA), an indicator of a person's B12 level, according to study author Yvonne Lamers of the University of British Columbia. "This minimally invasive approach helps us measure deficiency in an easier and more convenient way, especially in large samples of people. Our method is the first to make dried blood spot analysis sensitive enough to test healthy people for B12 deficiency."

By Clifford Murphy, University of Maryland, Baltimore County

By Don Brushett

It’s hard to get a bad coffee these days.

Plenty of baristas have fine-tuned the process of making espresso, but really there are only a handful of variables they can control: