When most members of a community are vaccinated, they protect those who are not by eliminating the viral reservoirs in the population. The effect is known as 'herd immunity.'
We live in a complicated, oppressive world with enormous cities and vast populations, and I try to contribute by making it more light and open and calm.
Contrasting sharply, in the developing countries represented by India, Pakistan, and most of the countries in Asia and Africa, seventy to eighty percent of the population is engaged in agriculture, mostly at the subsistence level.
The doctrine that everything is fine as long as the population is quiet, that applies in the Middle East, applies in Central America, it applies in the United States.
Empowering innovations transform something that is complicated and expensive into something that is so much more simple and affordable that a much larger population can enjoy it.
Indeed, I was unable to find any evidence whatsoever of the occurrence of a drastic evolutionary acceleration and genetic reconstruction in widespread, populous species.
Many Americans are unaware that we still have a large population of working families, elderly, and children who rely on emergency food pantries, shelters, and other resources to meet their nutritional needs.
There are some who complain that there is not enough food grain. But I put the argument that at the moment we use 2000 census population figures and require 50-55 million tonnes for distribution.
An open-minded and diverse population that readily shares information, encourages experimentation, accepts failure and dispenses with formality and hierarchy is what makes Silicon Valley the successful hub that it is.
I see feminism as a massive party. It's cool, the idea that 50% of the population can now start doing things and having fun and experimenting with their hair and makeup.
It's populated by people who, by and large, have terrific communication skills. Every day is an extraordinary day. For me, it was just a great area for storytelling.
The adaptive markets hypothesis says that all economic institutions, like our own species, develop and change over time, depending on the population of investors that are engaged with them.
Events in America show the extent to which democracy there is fuelled by populism - Barack Obama's victory is a manifestation not of Washington's need for change, but of America's. That is not how democracy works in England.
As a consequence, geneticists described evolution simply as a change in gene frequencies in populations, totally ignoring the fact that evolution consists of the two simultaneous but quite separate phenomena of adaptation and diversification.
When we foster an economy without hope, we guarantee that a segment of our population will be destined to know homelessness on a permanent basis, and not for the one night I voluntarily spent at a shelter.
I populated 'The Bourne Identity' with real characters from American history, specifically characters from the Iran-Contra affair, which my father ran the investigation of. But at the heart of it was a fictional character.
Heretofore there has always been in the history of the world a comparatively unoccupied land westward, into which the crowded countries of the East have poured their surplus populations.
It's an appeal as old as America and its presidency: This is an extraordinary country populated by hard-working, big-dreaming, freedom-loving people graced by God when they're not pulling themselves up by the bootstraps.
As a great man's influence never ends, so also there is not definite finality, no end, to a great survey; it runs along for centuries, ever responsive to the strain of the increasing needs of a growing population and an enlarging domain.
That's why Tennessee Williams was a great writer. Poetically, dramatically, it was fantastic stuff. And with the landscape, the losers in life populating it. His short stories have got rhythm, something musical about them.
There is a great deal of work that can be done between the SDLP representing the Nationalist population and the Unionist Parties, and I believe we should set down to do that.
