Parks feature, particularly in the earlier works, such as John Hilliard's very funny Across the Park, in which a long-haired stroller is variously smiled at by a pretty girl and unwittingly assaulted in a sequence of images that turn out to be different parts of the same photograph.
A typical work, such as Seven Days, consists of a single beautiful black-and-white photograph taken on an epic walk, with the mileage and number of days taken listed beneath.
Long is Britain's best-known Land Artist and his Stone Circle, a perfect ring of purplish rocks from Portishead beach laid out on the gallery floor, represents the elegant, rarefied side of the form.
Their Olaf Street Study, a square of brick-strewn waste ground, is one of the few works here to embrace the mundanity that characterises most of our experience of the landscape most of the time.
When he feels down — say, after giving a bad lecture — he grants himself permission to be human.
According to Ben-Shahar, realistic optimists are these who make the best of things that happen, but not those who believe everything happens for the best.
He reminds himself that not every lecture can be a Nobel winner; some will be less effective than others.
But that's exactly the kind of false cheerfulness that positive psychologists wouldn't recommend.
Most people would define optimism as endlessly happy, with a glass that's perpetually half fall.
As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be.
Finally, there is perspective, which involves acknowledging that in the ground scheme of life, one lecture really doesn't matter.
By all accounts he was a freethinking person, and a courageous one, and I find courage an essential quality for the understanding, let alone the performance, of his works.
I believe it is precisely this permanent coexistence of metaphysical message through physical means that is the strength of music.
It is also the reason why when we try to describe music with words, all we can do is articulate our reactions to it, and not grasp music itself.
Beethoven's habit of increasing the volume with an extreme intensity and then abruptly following it with a sudden soft passage was only rarely used by composers before him.
He was searching for tiny engraved seals attributed to the ancient Mycenaean culture that dominated Greece from the 1400s to 1200s BC.
Two and three-dimensional maps are helpful tools in planning excavations, illustrating how sites look, and presenting the results of archaeological research.
In one case, many researchers working around the ancient Maya city of Copán, Honduras, have located hundreds of small rural villages and individual dwellings by using aerial photographs and by making surveys on foot.
Airborne technologies, such as different types of radar and photographic equipment carried by airplanes or spacecraft, allow archaeologists to learn about what lies beneath the ground without digging.
The researchers mapped not only the city's vast and ornate ceremonial areas, but also hundreds of simpler apartment complexes where common people lived.
How do archaeologists know where to find what they are looking for when there is nothing visible on the surface of the ground?
In another case, American archaeologists René Million and George Cowgill spent years systematically mapping the entire city of Teotihuacán in the Valley of Mexico near what is now Mexico City.
One could interpret much of the work of Beethoven by saying that suffering is inevitable, but the courage to fight it renders life worth living.
It is not by chance that the Funeral March is not the last movement of the Eroica Symphony, but the second, so that suffering does not have the last word.
For him, order does not result from forgetting or ignoring the disorders that plague our existence; order is a necessary development, an improvement that may lead to the Greek ideal of spiritual elevation.
Especially significant was his view of freedom, which, for him, was associated with the rights and responsibilities of the individual: he advocated freedom of thought and of personal expression.
Neuroscientists, experts who study the nervous system, are increasingly showing that there's actually a lot that can be done.
To a certain extent, our ability to excel in making the connections that drive intelligence is inherited.
Now, a new Web-based company has taken it a step further and developed the first "brain training program" designed to actually help people improve and regain their mental sharpness.
Most importantly, it constantly modifies and enhances the games you play to build on the strengths you are developing — much like an effective exercise routine requires you to increase resistance and vary your muscle use.