February 3, 2015

Italy's new President Sergio Mattarella (R) and Prime Mnister Matteo Renzi are escorted by Presidential Guards, after visiting the Unknown Soldier's monument in central Rome.

5 Italy's new President Sergio Mattarella (R) and Prime Mnister Matteo Renzi are escorted by Presidential Guards, after visiting the Unknown Soldier's monument in central Rome.

6 یک زنبور در حال عبور از روی گل افتاب پرست در شهر فرانکفورت آلمان.

Supporters welcome Muhammadu Buhari (in vehicle), presidential candidate from the All Progressives Congress party, as he visits Gombe Emir Abubakar Shehu-Abubakarn at the emir's palace during an election rally in Gombe, Nigeria.

7 Supporters welcome Muhammadu Buhari (in vehicle), presidential candidate from the All Progressives Congress party, as he visits Gombe Emir Abubakar Shehu-Abubakarn at the emir's palace during an election rally in Gombe, Nigeria.

An artificially triggered avalanche thunders down a mountain side at the Vallee de la Sionne in Anzere near Sion, Switzerland. The full-scale avalanche dynamics test site is providing scientists and engineers of the Swiss Institute of Research of Snow and Avalanches with essential data to understand and model avalanche motion, according to the Institute website.

8 An artificially triggered avalanche thunders down a mountain side at the Vallee de la Sionne in Anzere near Sion, Switzerland. The full-scale avalanche dynamics test site is providing scientists and engineers of the Swiss Institute of Research of Snow and Avalanches with essential data to understand and model avalanche motion, according to the Institute website.