Left to their own devices, epidemic diseases tend to follow the same basic process: A virus or bacteria infects a host, who typically becomes sick and in many cases dies. Along the way, the host infects others. Alan Huffman bacteriumbasiccase share on social
The ocean is the last frontier of human empirical knowledge; even the contours on that eighth-grader's globe are the product of a mix of scientific measurement, inference and conjecture. Alan Huffman conjecturecontoureighth Change image and share on social
Conflict photographers grapple with two worlds that are themselves often in conflict - the one where bombs fall and bullets fly, where adrenaline runs high, and the other, back home, which is comparatively secure, and where the big event of the day may involve selecting swatches of fabric for a new sofa. Alan Huffman adrenalinebackbig share on social
Based on German prototypes, green walls and roofs are a natural idea in Singapore's tropical environment, where mosses, ferns, philodendrons, orchids and other epiphytes literally grow on trees. Alan Huffman baseenvironmentepiphyte Change image and share on social
Right up until the late 18th century, when the first weighted lines were used to probe the ocean depths, many people believed the seas were bottomless - the watery equivalent of infinite outer space. Alan Huffman 18thbelievebottomless Change image and share on social
When President Teddy Roosevelt posed for the cameras astride a massive steam shovel during construction of the Panama Canal in 1906, it was more than a simple photo op. Though the scene was clearly staged, it symbolized a crucial moment in American history. Alan Huffman americanastridecamera share on social
The Singaporean government, which represents legal migrant workers in employment disputes and claims of exploitation, requires that they stay in the country until the disputes are settled. If they leave, their claims are closed. Alan Huffman claimclosecountry share on social
Anyone who was alive during the outbreak of the bubonic plague in the 14th century experienced something terrifyingly close to the widespread death and chaos of an apocalyptic event. Alan Huffman 14thaliveapocalyptic Change image and share on social
Historically, maritime travelers had to pass around the entire mass of North and South America, including the bottom tip, the tempestuous Cape Horn, which was littered with shipwrecks. Alan Huffman americabottomcape Change image and share on social
My own experience with trains dates to long-ago childhood trips with my family in Mississippi to see my grandmother off at the station in Jackson, bound for Memphis. Alan Huffman agobindchildhood Change image and share on social