Science .... our every question, but it .... humanity's best tool yet for tackling our greatest challenges.

For a long time, scientists .... aware that the Earth's atmosphere is not static, but is in constant motion, producing areas of ever-changing pressure around the globe, but from 1700 onward, scientists .... to discover how and why large-scale atmospheric movements occur.

In recent years, linguists .... whether the homogenising effects of TV, film, and the Internet .... to eliminate many so-called regionalisms in the language in the US.

From asteroid strike to nuclear war, humanity .... all kinds of existential threats, yet, if humankind disappeared tomorrow, nobody knows what kind of planet we .... behind.

After .... victorious from World War I, structural problems and massive debt plunged Great Britain into an economic crisis that .... into the middle of the 1930s.

A number of studies have concluded that a given level of carbon dioxide in the atmosphere .... less warming than previously .... .

Anyone who .... unusual reactions to antihistamines (medicines that relieve or prevent the symptoms of some kinds of allergy) in the recent past .... his or her physician know before taking the drugs again.

By 2.5 million years ago, when they began ---- stone tools, early humans had understood that they ---- the natural world to their own advantage.

New research ---- that mother monkeys ---- to other females to help share the burden of raising increasingly dependent offspring.

Patients with implants or electronic devices put inside their bodies ---- using magnetic resonance imaging (MRI) because the machine's magnet ---- these objects within the body, causing damage.

In the age of steam, with new railroad ---- across Europe and the US, engineers began ---- even more applications for the steam engine.

The technological advancements that once made nations prosperus, such as the internal combustion engine, ---- to shatter empires during the first World War, on a scale few people ---- before the outbreak of the war.

Tomatoes are so widely consumed that they represent a vehicle ---- beneficial nutrients to those who ---- expensive seasonal berries.

With the development of agriculture, humans ---- to transform more and more extensively the environments in which they ----.

Any student who ---- 4 years in high school or college attempting to learn a second language ---- the struggle of trying to memorize vocabulary, verb conjugation or tenses

For many consumers from all over the world, the Internet is the first place ---- for useful information that ---- them about what they buy

Behind every architectural masterpiece ---- a brand new technology without which these structures ----a few years ago.

Philosophy didn't play a large part in Roman culture, other than Stoicism, which ---- by the Romans, for itsemphasis on virtuous conduct and ---- one's duty.

You ---- good about helping others when you see how it ---- a difference for someone else.