Identical twins are about twice as much alike in terms of altruism and aggression as fraternal twins.
Light is connected by space, matter is connected by history; gravity connects all, converting either into the other.
The whole intent of this paper is to give some comfort to the rational, abstracting mind that these intuitive feelings of connection are valid and can be trusted.
Later generations of cells differ still further and eventually mature into cells as different as gland, muscle, and nerve cells.
Even small changes in acidity can alter the molecules and how they interact.
In individuals cases, these effects may seem quirky or even charming but across populations, they can have a global power.
Recent reviews of twinning rates in the United States Allen, and Japan Imaizumi, confirm the racial differences.
Can the common brain parasite, Toxoplasma gondii, influence human culture?
This has lead increasingly to "the twilight of common dreams," as former celebrity sex flix, Todd Gitlin, described it in his book by that name.
Similarly, in countries that adhere to the ideology of Multiculturalism, critics can be silenced by the use of so-called racial vilification laws and other coercive methods.
Below, we will consider some other specifically human connections with the Cosmos.