Short-term exposure to air pollution increases the risk of respiratory diseases. This risk is higher during critical air quality events when episodes last for several days and are harmful to the most vulnerable groups. A common strategy in Latin America is temporarily adjusting transport policies to reduce emissions and the impact on people's health.

Can accents change how individuals interact with others and their social beliefs? This study investigates the impact of accents on social interactions using conjoint experiments within an online survey of 6,000 Colombian respondents. Participants evaluated pairs of hypothetical profiles, each accompanied by audio clips of voices with accents indicative of varying socio-economic statuses. The profiles included additional details on income, education, and other relevant attributes.

In this paper we study the relationship between ideological segregation in Twitter and external events  in the context of the "estallido social" of 2021 in Colombia. We analyze the tweeting behavior of approximately 37,000 users active in political discussions during the two most intense months of the 2021 "estallido social" in Colombia, supplemented by event data from ACLED. Our findings reveal a significant increase in political segregation within daily weighted and directed re-tweet networks of right, left, and center groups during spikes in street violence.