 Forest on Ridge Trail near Trailpoint 13 in Sourland Mountain Preserve. Somerset County, New Jersey, May 6, 2007
 Showy Orchis (Galearis spectabilis) orchid wildflower on Ridge Trail above Trailpoint 1 in Sourland Mountain Preserve. Somerset County, New Jersey, May 6, 2007
 Blooming garlic mustard carpeting forest near Red Trail in Six Mile Run Reservoir. Somerset, New Jersey, May 6, 2007
 Yellow Trail in Six Mile Run Reservoir, after flooding. Somerset, New Jersey, April 29, 2007
 An old car on Red Trail in Six Mile Run Reservoir, near Cross Brook. Somerset, New Jersey, April 29, 2007
 Blue Trail in Six Mile Run Reservoir, approaching Blackwell Mills Road. Somerset, New Jersey, April 29, 2007
 Crossing of Mountain and Brink roads east from Wallpack Center. Delaware Water Gap, New Jersey, March 3, 2007
 Appalachian Trail near Rattlesnake Mountain. Delaware Water Gap, New Jersey, May 12, 2007
 Stones on Appalachian Trail south from Rattlesnake Mountain. Delaware Water Gap, New Jersey, May 12, 2007
 Blooming oak on Appalachian Trail south from Rattlesnake Mountain. Delaware Water Gap, New Jersey, May 12, 2007
 Oaks on Appalachian Trail south from Rattlesnake Mountain. Delaware Water Gap, New Jersey, May 12, 2007
 Appalachian Trail on a ridge of Kittatinny Mountains. Delaware Water Gap, New Jersey, May 12, 2007
 A snake on a trail south from Mountain Lakes in John Witherspoon Woods park. Princeton, New Jersey, April 28, 2007
 A deer on Linear Park Trail (former railroad) in Cook Natural Area, near Ridge Road. Kingston, New Jersey, May 11, 2007
 A small flower on Mount Rose Ridge Trail in Stony Brook Watershed park. Pennington, New Jersey, April 29, 2007
 View to the west from Rattlesnake Mountain. Delaware Water Gap, New Jersey, May 12, 2007
 View of Manhattan from High Mountain. Paterson, New Jersey, March 25, 2007
 Walpack Valley from Rattlesnake Mountain. Delaware Water Gap, New Jersey, May 12, 2007
 A small creek near Mountain Road in Delaware Water Gap. New Jersey, March 3, 2007
 Prismatic rocks in High Mountain Park. Paterson, New Jersey, March 25, 2007
 Walpack Valley, view from Mountain Road. Delaware Water Gap, New Jersey, May 12, 2007
 Garlic mustard and cut leaf toothwort in background on Mount Rose Ridge Trail in Stony Brook Watershed park. Pennington, New Jersey, April 29, 2007
 A farm in Walpack Valley, view from Mountain Road. Delaware Water Gap, New Jersey, May 12, 2007
 Frozen Buttermilk Falls on Mountain Road in Delaware Water Gap. New Jersey, March 3, 2007
 May apple leaf growing through a dry leaf on Mount Rose Ridge Trail in Stony Brook Watershed park. Pennington, New Jersey, April 29, 2007
 A stream south from Wallpack Center, view from Mountain Road. Delaware Water Gap, New Jersey, March 3, 2007
 A creek south from Wallpack Center, view from Mountain Road. Delaware Water Gap, New Jersey, March 3, 2007
 A farm west from Hidden Falls, view from Mountain Road. Delaware Water Gap, New Jersey, March 3, 2007
 Tulips on a trail descending from a mountain ridge to Yeroham reservoir. The Middle East, March 8, 2001
 View of hills near Yeroham from a trail from a damn to the mountain ridge. The Middle East, March 8, 2001
 A tulip on a trail descending from a mountain ridge to Yeroham reservoir. The Middle East, March 8, 2001
 A tulip on a trail descending from a mountain ridge to Yeroham reservoir. The Middle East, March 8, 2001
 Concrete remains south from Mountain Lakes in John Witherspoon Woods park. Princeton, New Jersey, April 27, 2007
 Skunk cabbage on pipeline right of way crossing a creek in Mountain Lakes North park. Princeton, New Jersey, April 27, 2007
 Spring desert near a trail descending from a mountain ridge to Yeroham reservoir. The Middle East, March 8, 2001
 Leaves of skunk cabbage on pipeline right of way crossing a creek in Mountain Lakes North park. Princeton, New Jersey, April 27, 2007
 A tulip and wild onions (?) on a trail descending from a mountain ridge to Yeroham reservoir. The Middle East, March 8, 2001
 Spring flowers in a riverbed near a trail descending from a mountain ridge to Yeroham reservoir. The Middle East, March 8, 2001
 Spring flowers among rocks in a riverbed near a trail descending from a mountain ridge to Yeroham reservoir. The Middle East, March 8, 2001
 A dwarf iris in Negev Desert on a trail descending from a mountain ridge to Yeroham reservoir. The Middle East, March 8, 2001
 Leaves of skunk cabbage on pipeline right of way crossing a creek north from Mountain Lakes in John Witherspoon Woods park. Princeton, New Jersey, April 27, 2007
 View to the south from south side of Mountain Lakes in John Witherspoon Woods park. Princeton, New Jersey, April 28, 2007
 El Capitan Mountain from a trail at the foot of the mountain. Guadalupe Mountains National Park, Texas, December 27, 2007
 Mountain laurel flowers on Blue Trail in DeSoto State Park on Lookout Mountain. Fort Payne, Alabama, May 19, 2007
 View of a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 View from a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 Bedouin sheep on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 View of a heavily polluted Yeroham reservoir from a mountain ridge. The Middle East, March 8, 2001
 Red anemone (adonis?) flower on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 A tulip in Negev Desert, on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 A tulip in Negev Desert, on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 A tulip in Negev Desert, on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 Spring plant in Negev Desert, on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 A tributary of Nahal Revivim descending from a mountain ridge near Yeroham reservoir. The Middle East, March 8, 2001
 Spring flowers in Negev Desert, on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 Spring flowers in Negev Desert, on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 A thorny plant in Negev Desert, on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 A tributary of Nahal Revivim descending from a mountain ridge near Yeroham reservoir. The Middle East, March 8, 2001
 Spring plants in Negev Desert, on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 Rocks on a slope of Freshman Mountain east from Turkey Pass Trail in Enchanted Rock State Natural Area. Fredericksburg, Texas, October 27, 2007
 Spring flowers on rocks of Negev Desert, on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 A dry riverbed at spring of a tributary of Nahal Revivim descending from a mountain ridge near Yeroham reservoir. The Middle East, March 8, 2001
 Red anemones in a riverbed of a tributary of Nahal Revivim descending from a mountain ridge to Yeroham reservoir. The Middle East, March 8, 2001
 Spring flowers in a riverbed of a tributary of Nahal Revivim descending from a mountain ridge near Yeroham reservoir. The Middle East, March 8, 2001
 Common flowers in a riverbed of a tributary of Nahal Revivim descending from a mountain ridge near Yeroham reservoir. The Middle East, March 8, 2001
 Mountain ridge of Kuhe Derbend in Iran, north-east of Ravar. View from a window of a plane from Dubai, UAE to Houston, TX, April 28, 2011
 Succulent plants Caralluma europaea var. judaica in Negev Desert, on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 Garlic-like flowers in a riverbed of a tributary of Nahal Revivim descending from a mountain ridge to Yeroham reservoir. The Middle East, March 8, 2001
 Trap Mountain(?) west from Smokey Creek Trail near Trap Spring east from Mule Ear Overlook. Big Bend National Park, Texas, November 25, 2007
 Exotic succulent plants Caralluma europaea var. judaica in Negev Desert, on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 River cutting a mountain ridge of Kuhe Sangi in Iran, east of Ravar. View from a window of a plane from Dubai, UAE to Houston, TX, April 28, 2011
 Blue pimpernel flowers in a riverbed of a tributary of Nahal Revivim descending from a mountain ridge near Yeroham reservoir. The Middle East, March 8, 2001
 Quail Trail in Abram S. Hewitt State Forest. West Millford, New Jersey, April 21, 2007
 El Capitan Mountain from southern foot of the mountain. Guadalupe Mountains National Park, Texas, December 27, 2007
 Typical hills near Yeroham, view from a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 Torques Trail near Dunnfield Creek, Worthington State Forest. Delaware Water Gap, New Jersey, March 31, 2007
 View of hills near Yeroham from the highest point of a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 A boat in a forest near a trail of Delaware and Raritan Canal State Park north from Kingston. New Jersey, April 19, 2007
 Delaware and Raritan Canal State Park east from Washington Road. Princeton, New Jersey, March 13, 2007
 Delaware and Raritan Canal State Park east from Harrison Street. Princeton, New Jersey, March 13, 2007
 Rare succulent plant Caralluma europaea var. judaica going to bloom by starry flowers in Negev Desert, on a mountain ridge behind Yeroham reservoir. The Middle East, March 8, 2001
 View of a heavily polluted Yeroham reservoir from a mountain ridge, with Yeroham (the most desolated city in Israel) with its chemical factories behind it. The Middle East, March 8, 2001
 View of Fox Island in Greenwood Lake from Quail Trail in Abram S. Hewitt State Forest. West Millford, New Jersey, April 21, 2007
 Heathcote Brook Branch east from Extended Stay America hotel at Road 1. South Brunswick, New Jersey, April 15, 2007
 Arch and a courtyard of East Pyne Hall in Princeton University. Princeton, New Jersey, March 1, 2007
 El Capitan Mountain at sunset, view from lower Roadside Park south from the mountain. Guadalupe Mountains National Park, Texas, December 28, 2007
 Parasitic plants in Beartrap Meadow County Park on Casper Mountain. Wyoming, July 21, 2010
 A statue of J. Witherspoon in front of East Pyne Hall of Princeton University. Princeton, New Jersey, March 2, 2007
 Dwarf sunflowers (Old-man-of-the-mountain, Rydbergia grandiflora, Hymenoxys grandiflora) on a slope of Colony Baldy Mountain in Sangre de Cristo Mountains. Colorado, July 3, 2007
 Yellow coralroot (Corallorhiza trifida) in Beartrap Meadow County Park on Casper Mountain. Wyoming, July 21, 2010
 Sulphur Flower (Eriogonum umbellatum) in Beartrap Meadow County Park on Casper Mountain. Wyoming, July 21, 2010
 A bronze sculpture of Henry Moore "Oval with Points" (zoomed) near East Pyne Hall in Princeton University. Princeton, New Jersey, March 1, 2007
 Torques Trail near Dunnfield Creek. Delaware Water Gap, New Jersey, March 31, 2007
 Appalachian Trail above Sunfish Pond. Delaware Water Gap, New Jersey, March 31, 2007
 Participants of Quantum Summer School conference visiting Beartrap Meadow County Park on Casper Mountain. Wyoming, July 21, 2010
 Participants of Princeton - TAMU Symposium touring Princeton University campus, near East Pyne Hall. Princeton, New Jersey, April 7, 2007
 Participants of Princeton - TAMU Symposium touring Princeton University campus, near East Pyne Hall, with M. Scully to the right. Princeton, New Jersey, April 7, 2007
 A trail in Delaware and Raritan Canal State Park. Kingston, New Jersey, March 28, 2007
 A trail in Delaware and Raritan Canal State Park. Princeton, New Jersey, March 23, 2007
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