Cannabis is increasingly normalized, but biology remains unchanged.
A review of 64 studies by researchers from Wroclaw Medical University shows that THC interferes with the endocannabinoid system — a key regulator of fertility, pregnancy, and fetal development.

THC affects the brain’s hormonal control centers, reproductive organs, and the placenta. In men, it is linked to poorer sperm quality and epigenetic changes; in women, to disrupted ovulation and impaired embryo implantation. During pregnancy, THC crosses the placenta, increasing the risk of low birth weight, prematurity, and neonatal complications, and is also present in breast milk.

There is no proven safe dose or safe form of cannabis. As legalization advances, the authors stress the need for clear guidance: avoiding cannabis when planning pregnancy, during pregnancy, and while breastfeeding is the safest choice.

To increase the power generated by solid oxide fuel cells (SOFCs), multiple cells have to be connected into a stack. Nonuniformity of cell performance is a worldwide concern in the practical application of stack, which is known to be unavoidable and caused by manufacturing and operating conditions. However, the effect of such nonuniformity on SOFCs that are connected in parallel has not been discussed in detail so far. This paper provides detailed experimental data on the current distribution within a stack with nonuniform cells in parallel connection, based on the basics of electricity and electrochemistry. Particular phenomena found in such a parallel system are the “self-discharge effect” in standby mode and the “capacity-proportional-load sharing effect” under normal operating conditions. It is believed that the experimental method and results proposed in this paper can be applied to other types of fuel cell or even other energy systems.

Plant regeneration relies on a delicate balance between stem cell renewal and differentiation, yet the evolutionary origin and functional limits of key regulators remain poorly understood.