1. If this is true, it is not clear why so many humans settled in permanent villages and developed agriculture, growing crops and domesticating animals: cultivating fields was hard work, and it was in farming villages that epidemic diseases first took root.::2461-29

  2. It is the branch of science that is devoted to understanding people: how and why we act as we do; why we see things as we do; and how we interact with one another.::2411-38

  3. It is this guaranteed cost of competition that allows deceptive individuals to exaggerate their strengths and play down their weaknesses without necessarily getting caught.::25yd-103

  4. It was only when they looked again that they saw a medium-sized octopus, with all eight of its arms folded and its two eyes staring upwards to create the illusion.::2411-31

  5. It's when people find themselves unable to explain why they recognize the person, saying things like "his face just popped out at me," that they tend to be accurate more often.::2411-22

  6. And it is this type of compression that is responsible for the difficulty in understanding poetry and mathematics.::25ss-1102

  7. For example, it is only a limited number of tissues and body shapes that may result from the development of a human embryo.::2411-39

  8. In fact, for many participants it is sport that produces the primary stresses and strains in their lives."::25ss-T115

  9. In fact, probably more than any other aspect of filmmaking, it is via the audio that people determine silently to themselves, "Good, professional quality" or "low-budget student production" as soon as the film begins.::2473-32

  10. It was not until the development of the railways in the nineteenth century that a relatively cheap and efficient form of transport was afforded to the population at large, enabling sports tourism to develop beyond the small and exclusive upper-class activity that had existed hitherto.::25yd-709

  11. This is a general feature of the poetical ping-pong: the heart of the poem is given to the concrete, and it is in this direction that the poem goes.::25ss-T316

  12. It is, rather, mutual fear of men's present and future that assembles them, since the cause of fear is a common drive among people in the state of nature.::2412-39

  13. It was during this time that he became familiar with new trends in Western art, including Abstract painting.::esh1-301

  14. The researchers determined that it was the reward program that caused the children to like the games less.::25ss-T112

  15. It is the combinations of olfactory receptors, which activate different neuron patterns, that allow us to distinguish between the smells of fresh-brewed and hours-old coffee.::25ss-T322

  16. Unfortunately, a great deal has happened since then, and it is with sadness that we now find we will not be able to go.::24sw-103

  17. Authenticity is at the heart of our decision-making and it is in each and every small moment in life that it makes a difference.::24yd-6010

  18. It was through this process of natural selection in action that the polar bear was born.::24yd-807