Tomás Zerón de Lucio, the head of Mexico's Criminal Investigations Agency, turned in his resignation to the prosecutor general's office on Sept. 14—amid an internal inquiry into his handling of the case of 43 college students who disappeared nearly two years ago. The undergraduate students, from Ayotzinapa town in Guerrero state, are said to have been abducted by corrupt local police and turned over to a murderous narco-gang—but surviving kin and their supporters increasingly charge Mexico's government with a cover-up in the case.

The US Congress on Sept. 28 overrode President Barrack Obama's veto of a bill that will allow the families of 9-11 victims to sue Saudi Arabia. Obama had vetoed the Justice Against Sponsors of Terrorism Act (JASTA), stating that it violates international standards of sovereign immunity, and may set a dangerous precedent for the US to be held liable by foreign courts. Obama stated that the decision was necessary to uphold US national interests. Congress voted overwhelmingly to override Obama's veto, with the Senate voting 97-1 and the House 348-77. This is the first veto overridden during Obama's presidency.

Amnesty International claims "horrific evidence" of repeated chemical weapons attacks carried out by Sudanese government forces against civilians, including young children. Using satellite imagery, more than 200 telephone interviews with survivors, and analysis of dozens of "appalling images showing babies and young children with terrible injuries," Amnesty's new report, "Scorched Earth, Poisoned Air," indicates that at least 30 likely chemical attacks have taken place in the Jebel Marra area of Darfur since January. The most recent was Sept. 9 Amnesty estimates that between 200 and 250 people may have died as a result of exposure to chemical weapons agents, with many or most being children.

The International Criminal Court released a policy document Sept. 15 calling for prosecution of individuals for atrocities committed by destroying the environment. The document, prepared by chief prosecutor Fatou Bensouda, sets out the types of cases that the court will now prioritize, including willful environmental destruction, illegal exploitation of natural resources, and "land grabbing." The ICC has already shown a willingness to apply its authority to situations involving environmental destruction. Between 2009 and 2010, then-prosecutor Luis Moreno Ocampo successfully obtained arrest warrants from the court against the president of Sudan, Omar al-Bashir, for acts of genocide, war crimes and crimes against humanity. Among other acts, these alleged crimes involved the contamination of wells and destruction village pumps in Darfur to deprive targeted populations of water. Al-Bashir's trial has not yet commenced as he continues to evade arrest. (The Conversation, Sept. 23)

Peru launched its first satellite into space this month, to monitor illegal mining, logging and other extractive activities in the country's vast stretch of the Amazon rainforest. The Peru SAT-1, developed with French aid and the most sophisticated in Latin America, was launched Sept. 15 from Kourou Spaceport in French Guiana and monitored from the Satellite Images National Operations Center (CNOIS) in Pucusana, south of Lima. The satellite bears the logo of Peru's space agency, CONIDA, with the words "Kausachun Peru" (Viva Peru in Quechua). (Peru This Week, Nature, Sept. 15)

Amnesty International on Sept. 28 released a report detailing the prevalence of torture employed by Thai authorities, and asserting that the military government has instated a "culture of torture." The report, "Make Him Speak by Tomorrow," named after an apparently common order given to soldiers, is the product of a two-year investigation and details 74 cases of torture or other forms of ill-treatment implemented by Thai authorities. Although Thailand is a party to the UN Convention against Torture, Amnesty charges that many elements of the legal system allow or incentivize the use of torture. Thailand is currently working on legislation that would criminalize torture, but AI's report also provides suggestions for how the government can resolve the major issues.

Swiss voters on Sept. 25 approved a new surveillance law allowing their national intelligence services broad powers to spy on "terrorist" suspects and cyber criminals, as well as to cooperate with foreign intelligence agencies. While the right to privacy is traditionally considered very important in Switzerland, the new law will allow security agents to tap phones and computer networks. This marks a drastic change from previous surveillance capabilities, under which intelligence agencies relied solely on information from public sources and other authorities. Some left-wing groups have protested, saying the new legislation violates citizens' rights and will undermine Switzerland's neutrality. Amnesty International said the law would lead to "disproportionate" levels of surveillance and was harmful to "freedom of expression." Despite opposition, the new law garnered 65% of the vote.

Residents of the Bosnian Serb Republic voted in a referendum Sept. 25 to maintain Jan. 9 as a national holiday in defiance of a court ruling. The date remembers Jan. 9, 1992, when ethnic Serbs declared their own state within Bosnia and triggered a brutal conflict in which it is estimated 100,000 people lost their lives. The Constitutional Court of Bosnia and Herzegovina had banned the referendum, and had originally ruled that the date should be changed because it discriminated against Muslim Bosniaks and Catholic Croats. Republika Srpska President Milorad Dodik, who had set the date for the vote, said he was proud of the peaceful manner in which the referendum passed.