• September 2020, Review of the cosmological constant problem, GravBR initiative seminar.
• July 2020, About the hiding of the cosmological constant, Heidelberg University ITP Cosmology group seminar. (Sorry, no slides, I showed the paper directly).
• July 2019, Lectures on the cosmological constant, two invited lectures at the Institute of Theoretical Physics of the Heidelberg University
• December 2018, The effect of the cosmological constant on the bending of light, cosmology group seminar at the Institute of Theoretical Physics of the Heidelberg University
• July 2018, Introduction to Gravitational Waves, series of 3 lectures delivered at the Inverno Astrofísico 2018. Here are the slides.
• PPGFis seminar (colóquio do PPGFis). November 22, 2017. Gravitational Lensing.
• PPGCosmo Colloquium. September 6, 2017. Gamma, Zeta and prime Numbers. 
• PPGFis seminar (colóquio do PPGFis). May 3, 2017. Introdução à Cosmologia (in Portuguese).
• ​Introduction to Cosmology (in Portuguese). 3 lectures delivered at ​Primeira Escola de Ciências Físicas Brasil-Cabo Verde. ​Lecture 1, Lecture 2, Lecture 3. Cape Verde, April 3-13, 2017.
• Lensing in the McVittie metric. September 2, 2015. ICG (Portsmouth, UK)
• Causal Bulk Viscous Cosmology - Bulk Viscosity as Unified Dark Matter. November 17, 2010. CBPF (Rio de Janeiro, Brazil)