The Photos application is one of Facebook’s most popular features. Up to date, users have uploaded over 15 billion photos which makes Facebook the biggest photo sharing website. For each uploaded photo, Facebook generates and stores four images of different sizes, which translates to a total of 60 billion images and 1.5PB of storage. The current growth rate is 220 million new photos per week, which translates to 25TB of additional storage consumed weekly. At the peak there are 550,000 images served per second. These numbers pose a significant challenge for the Facebook photo storage infrastructure.

The project also didn’t much consider the crews of low-wage farm workers that would be needed to plant and harvest the crops of the ambitious vertical farm; presumably these crews would share elevators and stairwells with the residents of the market-rate condos above.

Infrastructure provides the basic needs for society, and sustainable infrastructure systems are essential for the survival, health and well-being of a society. For developing countries, the civil and environmental engineer are at the epicenter in seeking means to enhance human life through modernization of infrastructure as evidenced by provision of shelter, water, and transport, amongst others.

The current rate of urbanization and industrialization has caused a rise in environmental issues, involving environmental mismanagement which has been associated with unforeseen global catastrophes. The problems are further aggravated with environmental degradation such as soil erosion, depletion of water resources, etc.

In order to meet these multifaceted challenges, proper planning, implementation and verification exercises are required, via an integrated, multidisciplinary and holistic approach. The global momentum for sustainable development must now lead to practical applications of the engineering and science of sustainability.

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We had planned for a lot of traffic on launch day and had been load testing the game - in fact, we've been testing and optimizing for a whole month. However, between the enthusiasm of Monopoly fans around the world, everyone who was excited to try out the new experience and non-stop mentions of the game on Twitter, blogs and everywhere else, our servers were overwhelmed. Based on the stats we have, we show a daily rate of about 1.7 million unique visitors, but the figure is likely far higher.

Tough economic times call for innovative approaches. An estimated 51 million people internationally are expected to lose their jobs in 2009, and with the unemployment rate on the rise, how does one find career opportunities fast? One great option is Twitter. Twitter (Twitter) is evolving as another resource, in addition to traditional methods, for both job searching and recruiting.

The Photos application is one of Facebook’s most popular features. Up to date, users have uploaded over 15 billion photos which makes Facebook the biggest photo sharing website. For each uploaded photo, Facebook generates and stores four images of different sizes, which translates to a total of 60 billion images and 1.5PB of storage. The current growth rate is 220 million new photos per week, which translates to 25TB of additional storage consumed weekly. At the peak there are 550,000 images served per second. These numbers pose a significant challenge for the Facebook photo storage infrastructure.