ScienceIQ.com

Neutron Stars

Ordinary matter, or the stuff we and everything around us is made of, consists largely of empty space. Even a rock is mostly empty space. This is because matter is made of atoms. An atom is a cloud of electrons orbiting around a nucleus composed of protons and neutrons. The nucleus contains more than 99.9 percent of the mass of an atom, yet it has ...

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NeutronStars
Astronomy

Venus Is Hot Stuff

At first glance, if Earth had a twin, it would be Venus. The two planets are similar in size, mass, composition, and distance from the Sun. But there the similarities end. Venus has no ocean. Venus is ... Continue reading

VenusIsHotStuff
Physics

When Do We Encounter Ionizing Radiation In Our Daily Lives?

Everyone who lives on this planet is constantly exposed to naturally occurring ionizing radiation (background radiation). This has been true since the dawn of time. The average effective dose ... Continue reading

IonizingRadiation
Engineering

Space Lasers Keep Earth's Air Clean

Space laser technology is coming to our smokestacks and automobiles. Leave it to NASA to take its inventions to another level, helping to keep our air clean and breathable. A recent NASA invention, ... Continue reading

SpaceLasersKeepEarthsAirClean
Astronomy

Introduction to Constellations

'Constellation' is the name we give to seeming patterns of starsin the night sky. 'Stella' is the Latin word for star and a constellation is a grouping of stars. In general, the stars in these groups ... Continue reading

IntroductiontoConstellations

Cloning and Ethics

CloningandEthicsCloning technology today is far from perfect: it requires many attempts and only 1%, if any, of the cloned eggs become embryos and then survive. For example, the first cloned sheep, Dolly, was successful after 277 attempts. That means that with the current technology, cloning a human being would require the death of many embryos - a moral issue not easy to deal with. Some say that embryos are not fully human, so there is no moral problem; others say it is obvious they are human, since all their genetic information is already present in the embryo.

The humanness of the embryo is not the only issue of debate in human cloning. Although there are good reasons to clone animals (for example, to preserve species and valuable genomes), are there any good reasons to clone a human? Defenders of human cloning say good reasons to clone a child would be to continue a family line when a couple is infertile (an adopted child would not carry their genes), to produce organs that are needed for transplants and trigger the development of new medical treatments. Critics of human cloning say it rises legal (if you have two humans with identical DNA, how do you determine guilt or innocence in criminal cases based on DNA evidence) and religious problems (cloning is considered by many religions as unnatural, evil, ‘not God’s way of reproduction’).

Bioethicists point out that the common fear about clones, that a clone of Hitler would be as bad as he was, is a myth without scientific basis, and we should weigh the risks of human cloning against its benefits. A good question is, if cloning becomes safe, should we do it?