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This research concentrates on a variety of linear features at the ancient Maya site of Cobá, Quintana Roo, Mexico, and to a lesser extent at Yaxuná, Yucatán, Mexico and other smaller sites along a sakbej (ancient Maya road) which connects these two. Such sakbej themselves are one form of linear feature, while other less formal varieties include albarradas, chichbe, and t'úubulbej. I argue that many of these features were designed to manage the waterscape of Cobá. In some cases, sakbej and chichbe had culverts along their sides to direct rainwater towards small reservoirs, aguadas, or cisterns. In other cases, t'úubulbej served as steppingstone paths over areas prone to flooding, which allowed foot traffic over them and water to flow under them. In so doing, the ancient inhabitants of Cobá were able to navigate seasonal changes, store water through the dry season, avoid flooding complications during the rainy season, and manage wetlands for agricultural purposes. Ultimately, the city of Cobá was largely abandoned in the ninth century AD, primarily due to climate change in the form of severe droughts. Continued research on these topics aims to alleviate the current water crises in the region and seek insight toward current and looming climate change crises.

The M3D labeling system offers a dimensionalized approach to the annotation of communicative body movements (i.e., manual gestures, head movements, and other articulators) in terms of their form, their prosodic characteristics, and their semantic and pragmatic contributions to speech.

The present audiovisual corpus consists of narrative productions carried out by 83 children at two time points in development (when children were 5-6 years old, and then two years later). All the narratives have been orthographically transcribed and analyzed for prosody, gesture, and Information Structure. The studies/subprojects carried out with this longitudinal corpus aim to analyze children’s gesture-speech multimodal development in narrative discourse. For more details, see the PDF file "Description of the corpus_Vilà-Giménez et al". Please see the subprojects in the "Components" section below for more details about different individual studies that have been carried out using this audiovisual corpus. Data availability: The audiovisual data of this corpus are not publicly available due to privacy or ethical concerns and are available from the corresponding author and the second author upon reasonable request (OSF data repository). The ELAN data and information about this project are available at OSF with the identifier https://doi.org/10.17605/OSF.IO/NPZ3W