In this talk, I present implications for cosmic birefringence from recent cosmological observables. I begin by showing constraints on ALP mass through the ALP-induced cosmic birefringence using the Planck EB power spectrum. We find that some specific ALP masses are excluded. Next, I show that cosmic birefringence can explain a higher optical depth ¥tau~0.09 as a result of the DESI BAO measurements and CMB observations within the standard cosmological model. Specifically, I use the fact that the recent cosmic birefringence measurement, ¥beta_0=0.34 deg, has the phase ambiguity, ¥beta=¥beta_0+180n deg with n¥in Z. An ALP-induced birefringence model with a nonzero n can suppress the reionization bump in the EE spectrum while allowing for a large optical depth. I show a viable parameter region that simultaneously explains the large-scale CMB polarization, Planck EB power spectrum, and an elevated value of ¥tau. I also introduce the polarized SZ effect as a further test of cosmic birefringence at low redshift.