エラーが発生しました。 詳細 隠す
保存されていないページがあります。 復元 取り消す

If you’re a frequent international traveler, you probably look forward to the next stamp that will be added to the collection of pages inside. But as you approach airport security, clutching the document in your hand, have you ever wondered just how powerful it is? The answer depends on your passport’s country of origin. A tool called Passport Index aims to help curious travelers rank countries based on how easily their citizens can travel the globe. According to the system, passports accumulate points for each country their holders can visit without a visa. When totaled, the sum equals the passport’s “Visa Free Score.”

Source: Passport Index

関連するデータ洞察

Shrinking Populations: A Challenge for Pension Systems

Just as governments struggle to simultaneously address obesity and hunger, the world’s population continues to grow ... and shrink. The United Nations estimates that between 2015 and 2050 49 countries will experience population declines even as the total world population reaches 9.77 billion. Moreover, in all but two countries the ratio of old population to working-age population will increase by 2050, and an estimated 135 countries will experience fertility rates below replacement rates. While demographic changes usher in consequences for businesses and governments alike, in today’s Viz of the Day we explore the implications for...

Rupee Devaluation Against the US Dollar, 1947 - Present

Since India was under British rule, the rupee was pegged to the British pound. From 1927 to 1966, 13 rupees = 1 pound. The peg was maintained until 1966 when the rupee was devalued and pegged to the U.S. dollar at a rate of 7.5 rupees = 1 dollar. This peg lasted until the U.S. dollar was devalued in 1971.

Was Thomas Malthus right?

In 1798, British economist Thomas Malthus created a theory - published in Essay on the Principle of Population - in accordance to which uncontrolled world population growth will inevitably lead to hunger. Malthus' primary assumption was that population grows geometrically while food production grows arithmetically. The most adequate solutions to the inevitable hunger, according to Malthus, include wars, natural disasters, and diseases. As we can see from official statistics, Malthus' fear was for nothing. The world's population growth has exceeded that of food supply growth but the world is not hungry.

World Mental Health Day: Depression In Focus

Depression is a common mental disorder, characterized by sadness, loss of interest or pleasure, feelings of guilt or low self-worth, disturbed sleep or appetite, feelings of tiredness, and poor concentration. The most spread form of depression is Major Depressive Episode (MDE). MDE can be long-lasting or recurrent, substantially impairing an individual’s ability to function at work or school or cope with daily life. When mild, people can be treated without medicines but when depression is moderate or severe they may need medication and professional talking treatments. MDE is a disorder that can be reliably diagnosed and treated by...