- Fall Colors Arriving
A few days after autumn showed up on the calendar in the Northern Hemisphere, it showed up on the landscape of North America. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this view of fall colors around the Great Lakes on Sept. 26, 2014. The changing of leaf color in temperate forests involves several causes and reactions, but the dominant factors are sunlight and heat. Since temperatures tend to drop sooner and sunlight fades faster at higher latitudes, the progression of fall color changes tends to move from north to south across North America from mid-September through mid-November. In late summer and autumn, tree and plant leaves produce less chlorophyll, the green pigment that harvests sunlight for plants to convert water and carbon dioxide into sugars. The subsidence of chlorophyll allows other chemical compounds in the leaves—particularly carotenoids and flavonoids—to emerge from the green shadow of summer. These compounds do not decay as fast as chlorophyll, so they shine through in yellows, oranges, and reds as the green fades. Another set of chemicals, anthocyanins, are associated with the storage of sugars and give the leaves of some species deep purple and red hues. > More information Image Credit: Jeff Schmaltz at NASA GSFC. Caption by Mike Carlowicz
Category Archives: Heroes
It is commencement time in the US. Every year, speakers have an opportunity to bore the audiences with an inspirational / educational message at higher education establishments across the nation. An exception to the rule this year seems to be … Continue reading
June 6, 1944. 180,000 Allied troops. 50 miles of beaches, with tall cliffs, and heavily fortified positions. 5,000 ships 13,000 aircraft Focused on the goal of gaining a toehold in Northern Europe, liberating the continent, and defeating Nazi Germany. General … Continue reading
A reminder piece out of Fred Thompson’s new organization.
Here’s your feel good story for this Friday. It is a little aged, as I think I saw this a couple of years ago. It’s worth 10 minutes of your time to go and watch it though. Bastogne sniper still … Continue reading
On this day 237 years ago our Corps became a reality. The first Marines were recruited, and signed their papers on this day in 1775. In a small tavern in Philadelphia the United States Marine Corps was born. Today we celebrate that … Continue reading
Rarely do I delve into the “meme” of “Someone You Should Know”. However, recent events have drawn me to three individuals that need to be singled out for doing their jobs, and paying the ultimate price for doing them well. … Continue reading
With the news out of Fallon yesterday, I am somewhat at a loss for words. As part of the military community, you understand that there will be losses. Friends that for whatever reason abruptly depart from our lives. Yesterday, saw … Continue reading
When I first started getting interested in history I gravitated toward the stories of World War II. Watching Victory at Sea, The World at War, and so on. As I grew into my teens and started to really have to … Continue reading
This is a must see film for 2012. From the operators that have seen the pre-release version, I have heard nothing but good things. After watching this vid, I begin to see exactly why.