Mexican government and university researchers are warning about threats posed to the survival of 195 plant and animal species in the northern border state of Chihuahua. Studies by the Secretariat of the Environment and Natural Resources (Semarnat) have identified a broad gamut of species at risk, including birds, mammals, fish, reptiles and amphibians, as well as scores of cactus and other plant varieties.

As promised, Egypt's self-declared "Salafists" marched en masse on Tahrir Square, where secular opposition groups were holding a thousands-strong rally on Friday July 29. No violence was reported, but the Salafists were clearly vying with the secularists for control of the square—and the message. While the secularists chanted "The people want to topple the regime," the Salafists responded, "The people want to implement Sharia." As the secularists chanted "Peaceful, peaceful," the Salafists responded, "Islamic, Islamic." The Salafists also chanted "There is no God but Allah" and "Islamiya, Islamiya"; they also waved banners reading "Islamic Egypt," and Saudi flags. Plans for a new constitution is the new point of conflict. "Islamic law above the Constitution" was another popular Salafists chant. While the Muslim Brotherhood has continued to stay away from the Tahrir Square protests, the more radical Salafists have apparently opted for a strategy of confrontation with the protesters. Over the course of the evening, more and more of the secularists were intimidated into leaving the square, which was increasingly given over to the Salafists. (Radio Australia's AM, July 30; Egyptian Gazette, July 29)

The latest round of unofficial UN-brokered Western Sahara negotiations between Morocco and the Polisario Front ended without agreement last week, US Africa Command's Magharebia news site reports July 25. The eighth round of informal talks wrapped up July 21 in Manhasset, Long Island. "By the end of the meeting, each party continued to reject the proposal of the other as the sole basis for future negotiations, while reiterating their willingness to work together to reach a political solution in conformity with the pertinent resolutions of the United Nations Security Council," said UN Western Sahara envoy Christopher Ross. The UN News Centre on July 22 took a more optimistic spin, emphasizing plans to resume the dialogue after the autumn session of the UN General Assembly. “In order to find a just, lasting and mutually acceptable political solution, which will provide for the self-determination of the people of Western Sahara […] the parties continued to deepen their discussions on the two proposals, including the issue of the electoral corps, mechanisms for self-determination, and the forms of guarantees,” said a statement issued by the office of the Secretary-General’s Special Representative for Western Sahara, Christopher Ross.

Twice as many US citizens as previously reported by law enforcement have traveled overseas to join Somalia's supposedly al-Qaeda-linked Shabab insurgents, an investigation by Republican staff on the House Homeland Security Committee determined this week, asserting that more than 40 Americans have traveled to Horn of Africa country to join the rebel group (which is on the State Department list of "Foreign Terrorist Organizations." Publicly, authorities have reported at least 21 men left the Minneapolis area for Somalia since late 2007 and are believed to have joined the Shabab.

Campesino communities affected by mining in Peru's Andean departments of Junín and Huancavelica, meeting July 23 in Junín's capital, issued a "Declaration of Huancayo," demanding a new constitution guaranteeing the fundamental rights of the country's indigenous peoples and establishing the "agricultural character of our country, and not the mineral." The meeting, formally the "Bioregional Forum on Mining, Environment, Climate Change, Environmental Health and Prior Consultation," was convened by the National Confederation of Communities Affected by Mining (CONACAMI). It additionally demanded the government declare fragile ecosystems such as river headwaters and glaciers off-limits to mining.

Speaking before a conference of campesina women in Cochabamba July 25, Bolivia's President Evo Morales said he fears a US plot to frame him for drug offense: "Do you know what? I think they have to be preparing something. So much that I'm afraid to go with our airplane to the United States. Surely when we arrive, they can plant something and detain the presidential plane." Morales reiterated these fears to CNN en Español the following day: "The United States, as a global power, has all the experience of creating setups... They are preparing something to discredit us with drug trafficking." He said agents from the Drug Enforcement Administration had pursued him when he was a union leader, and that US authorities still seek to link him with drug trafficking. "When presidents do not submit to the United States government, to its policies, there are coups," he said.

A United Nations team, including representatives from the Office for the Coordination of Humanitarian Affairs (OCHA), High Commissioner for Refugees (UNHCR) and the World Health Organization (WHO), completed a one-week mission to Tripoli on July 24. On the fourth mission to Tripoli since the beginning of the crisis, the team aimed to assess the needs of displaced persons and other vulnerable groups, and looked at the humanitarian impact of the conflict on civilians. "Although the mission observed aspects of normalcy in Tripoli, members identified pockets of vulnerability where people need urgent humanitarian assistance," said Humanitarian Coordinator Laurence Hart.

Canadian oil company Pacific Rubiales has reportedly reached a deal with striking workers following a month of labor unrest in Puerto Gaitan, Colombia, that culminated this week in a blockade of the oilfields and riots in which several vehicles were destroyed, both protesters and National Police officers were injured, and by some reports one striker was killed. The dispute was triggered by the firing of 1,100 contractors by Cepcolsa, the Colombian subsidiary of Spanish multinational CEPSA, which partners in the region with state-controlled Ecopetrol and private companies such as Pacific Rubiales.