"MOSCOW — Even as American and Russian diplomats groped toward a settlement that would halt further Russian military intervention in Ukraine, Gazprom, the Russian energy company, stepped up the economic pressure on Tuesday by sharply raising the price it charges for natural gas."

"Gazprom has requested permission from the Crimean authorities to develop oil and gas fields, Crimea's first Deputy Prime Minister Rustam Temirgaliev said Tuesday."

"Federal analysis says sabotage of nine key substations is sufficient for broad outage."

"In the rings of ancient and gnarled trees, a team of scientists has found evidence of a period of consistent warmth and wetness in Mongolia between the years 1211 and 1225 -- the exact time that Genghis Khan first rose to power."

"Republicans say faster approval of LNG export terminals could help check the influence of other suppliers, like Russia, and allow Europe to take a tougher diplomatic stance on Ukraine. Energy analysts say that would take years."

WASHINGTON — Despite rising anxiety over the possibility of a cyberattack on the power grid, the industry and government are not set up well to counter the threat, according to a report produced by leading energy security experts. Companies are reluctant to share information with one other, a critical step in reducing vulnerability, because they are afraid of being accused of failing to comply with cybersecurity rules, committing antitrust violations or giving away proprietary information, the report found."

"SAN FRANCISCO – Halfway across the San Francisco-Oakland Bay Bridge, an abrupt exit leads to Treasure Island, a seven-sided plain with spectacular views that inspire grandiose dreams. The Army Corps of Engineers created the island for the 1939 Golden Gate International Exposition, encircling 400 acres of bay shoals with rock walls, draining them, filling the void with sand and soil, and naming it after the famous adventure novel. Today, the city of San Francisco has set its sights on erecting a second downtown there."

"SAN JOSE, Calif.—The attack began just before 1 a.m. on April 16 last year, when someone slipped into an underground vault not far from a busy freeway and cut telephone cables."

"WASHINGTON -- The National Security Agency monitored the communications of other governments ahead of and during the 2009 United Nations climate negotiations in Copenhagen, Denmark, according to the latest document from whistleblower Edward Snowden."

"SAN DIEGO, California -- Seventy-one U.S. Navy sailors from the aircraft carrier USS Ronald Reagan are filing suit against the Japanese utility Tokyo Electric Power Company, TEPCO, after they were allegedly exposed to radiation from the Fukushima Daiichi nuclear power plant when they arrived in Japan with aid."