science

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Golden Gate Bridge: San Francisco, United States
Now over 75 years old, San Francisco's Golden Gate Bridge is arguably the most recognizable bridge in the world.

Sydney Harbour Bridge: Sydney, Australia
Nicknamed "The Coat Hanger" by Sydney locals because of its arch-based design, the Sydney Harbour Bridge opened in 1932 and is a focal point of Aussie pride and celebrations.
For aspiring bridge climbers, BridgeClimb offers people just that.
Every year for New Year's Eve the bridge itself is used to complement fireworks displays creating various effects like smiley faces and a disco ball.

Ponte Vecchio: Florence, Italy
A Medieval bridge over the Arno River, the Ponte Vecchio is mainly known for its shops of jewelers, art dealers and souvenir sellers and for being Europe's oldest stone, closed-spandrel segmental arch bridge.
It has a rich history dating back to the time of the Romans. During World War II the bridge was not destroyed by the Nazis -- unlike many other bridges in Europe -- under an express order from Adolf Hitler.

Brooklyn Bridge: New York City, United States
Completed in 1883, the Brooklyn Bridge is one of the oldest suspension bridges in the United States. A National Historic Landmark, the Brooklyn Bridge is an iconic feature of New York.

Gateshead Millennium Bridge: Gateshead, England  read more »

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Deadly Heat Waves Threaten Third of the World
Currently, nearly a third of the world's population is exposed to lethal climate conditions for at least 20 days a year, according to findings published Monday in Nature Climate Change, a monthly peer-reviewed journal. As the planet's temperature rises, more of the world's population will be exposed to conditions that trigger deadly heat waves, the report said.

For a city like New York, which currently sees about two days per year that surpass the heat threshold, that could mean 50 deadly days per year by 2100.

The researchers analyzed more than 1,900 cases of fatalities associated with heat waves in 164 cities across 36 countries between 1980 and 2014 to define a global threshold for life-threatening conditions based on heat and humidity. Researchers found the overall risk for heat-related sickness or death has increased steadily since 1980.

The study notes well-documented heat waves, including a five-day stretch that claimed hundreds of lives in Chicago in 1995, the European heat wave in 2003 that saw tens of thousands of heat-related deaths and lethal temperatures in Moscow in 2010 that killed more than 10,000. Across Russia, the heat wave in 2010 claimed more than 50,000 lives. But the research team found that heatwaves are more common than most people think, and humidity levels combined with heat play a major role in heat-related heath risks.  read more »

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Why take part in World Meat Free Day? Experts say that by 2050 the world’s population is set to increase to over nine billion people, which is 30% higher than today. If we don’t make any changes to our diet by then, the increase in meat production is forecast to reach 200 million tonnes. This is a demand that simply cannot be met.

Food’s carbon footprint is the greenhouse gas emissions produced by growing, rearing, farming, processing, transporting, storing, cooking and disposing of the food you eat. Changing the foods that you eat, such as reducing meat consumption, can have a big impact on your carbon footprint. The CO2 kilos equivalent for producing a kilo of beef is 27 miles; you need to drive 63 miles to produce the same emissions as eating one kilogram of beef.

Recipes from Around the World, Kid Friendly, Family Favorites...

One-third of world now overweight, with US leading the way
More than two billion adults and children globally are overweight or obese and suffer health problems because of their weight, a new study reports.

This equates to one-third of the world's population carrying excess weight, fueled by urbanization, poor diets and reduced physical activity.

The United States has the greatest percentage of obese children and young adultcs, at 13%, while Egypt led in terms of adult obesity, with almost 35%, among the 195 countries and territories included in the study.  read more »

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Many species in peril on Endangered Species Day
From climate change to habitat fragmentation, pollution and human conflict, species around the world are facing a slew of threats to their survival.
The National Geographic Photo Ark project aims to capture photos of every species living in the world's zoos and other protected areas before they disappear. Throughout the summer, more than 45,000 digital screens across the country will feature Photo Ark images as part of the National Geographic Society and the Outdoor Advertising Association of America (OAAA) #SaveTogether campaign aimed at saving species at risk in the wild.

As the world marks Endangered Species Day on May 19, here's a look at some of the species that have been featured in the Photo Ark project, and some of the startling statistics about endangered species:

* More than 23,000 species on the IUCN Red List are threatened with extinction.
* 41% of the world's amphibians, 34% of conifers, 33% of reef building corals, 25% of mammals and 13% of birds, are threatened with extinction, according to the IUCN Red list database.
* 59% of all the carnivore species weighing 33 pounds or more are listed as threatened. Likewise, 60% of all the herbivore species weighing 220 pounds or more are listed as threatened, according to the National Geographic Photo Ark.
* 700 or fewer Sumatran tigers remain in the wild.
* 1447 species in the U.S. are on the threatened and endangered species list, according to the U.S. Fish and Wildlife service.  read more »

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The number of bicyclists is growing rapidly from coast to coast. The National Household Travel Survey showed that the number of trips made by bicycle in the U.S. more than doubled from 1.7 billion in 2001 to 4 billion in 2009.
For bicyclists of all stripes, there's nothing like Bike to Work Day (BTWD), an annual celebration of active transportation. Thanks, in part, to encouragement efforts like BTWD, the number of bike commuters is on the rise, as well — especially in Bicycle Friendly Communities (BFC). From 2000 to 2013, bicycle commuting rates in large BFCs increased 105% — far above the national average of 62% and more than double the rate in non-BFCs (31%).

According to the ACS, in 2012 about .64% of commutes are made by bicycle, which represents an almost 10% increase from 2011. This is the largest year-on-year increase since 2007-2008, showing that people are choosing to use their bicycles for transportation not just in response to economic crisis, but because bicycles are leading the way to recovery. In total, there were 864,883 bike commuters in 2012.
Since 2000, ACS data shows a 61.6% increase in bicycle commuting.  read more »

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Thomas Alva Edison (11 February 1847 – 18 October 1931) was an American inventor and businessman

In 1931, not long before he died, the inventor told his friends Henry Ford and Harvey Firestone: I’d put my money on the sun and solar energy. What a source of power! I hope we don’t have to wait until oil and coal run out before we tackle that.

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Image courtesy deviantart.com and Wikipedia

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Albert Einstein: 14 March 1879 - 18 April 1955

? is commonly defined as the ratio of a circle's circumference C to its diameter d : pi = C/d
The number ? is a mathematical constant, the ratio of a circle's circumference to its diameter, commonly approximated as 3.14159. It has been represented by the Greek letter "?" since the mid-18th century, though it is also sometimes spelled out as "pi" .

The ratio C/d is constant, regardless of the circle's size. For example, if a circle has twice the diameter of another circle it will also have twice the circumference, preserving the ratio C/d. This definition of p implicitly makes use of flat (Euclidean) geometry; although the notion of a circle can be extended to any curved (non-Euclidean) geometry, these new circles will no longer satisfy the formula p = C/d.

What are the digits for Pi? 3.14 or 3.1415926535897932384626433832795028... (ad infinitum). As of October 11, 2011, the record for the computerized listing of the numbers of Pi is some 10 Trillion...

1,241,100,000,000 digits1.2411 trillion digits (1,241,100,000,000) digits of pi have been discovered.

Who discovered Pi?
Greek mathematician Euclid (born 325 BC) Euclidean geometry, attributed by Greek mathematician Euclid (born 325 BC) was the first recorded system used to show Pi as a mathematical constant.
Or:  read more »