On the other half of the terrain, going back uphill is part of the adventure.
This magnetized terrain dates back at least 3.7 billion to 3.9 billion years, so the researchers deduce that ancient Mercury had a dynamo in which electrically conducting fluids inside its iron-rich core generated the field.
The diverse terrain includes back-country footpaths, city streets and canal towpaths.
In Aleppo, which has no unified rebel command and is riven by factions, the job hasn't been easy: The city has two rival legal systems, each controlling its own terrain and backed by different militias.
The front nine has even terrain, while the back nine has more swerves and deeper bunkers.
"Dear Diary: A great tumbleweed of dog hair bore down on me today as I attempted to navigate the uncertain terrain of the back hallway," I wrote.
Today, as Mr. Obama pitches the hugely attractive prospect of a postracial society, artists have, as usual, already been there, surveyed the terrain and sent back skeptical, though hope-tinged, reports.
You sense that Welsh knows the terrain like the back of his hand; that he knows where every minor character went to school, and how they got their nickname.
Andersen "wins back terrain for the novel that has been ceded to new media, demonstrating that the novel is as alive and as nimble as its high-tech competitors," Po Bronson said here in 1999.
It has been suggested that the surface of 81P/Wild 2 nuclei remains very old ancient terrain, presumably dating back to the comet's residence in the trans-Neptunian region (e.g., Brownlee et al., 2004).
