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<jats:p>After several weeks of violent protests, European farmers have achieved a tactical triumph that does not bode well for the future of environmental policies. In response to the demonstrations, the European Commission has enacted a derogation in the European Union’s (EU’s) Common Agricultural Policy (CAP) to set aside 4% of farmland for biodiversity and landscape protection, withdrawn a bill to halve pesticide use, removed a target to reduce agriculture emissions by 30% by 2040, and called for further changes in the CAP to loosen environmental requirements. These retreats reflect a lack of political commitment to policies aimed at greening European agriculture. Appeasing this “greenlash” surely will not help Europe meet its environmental and climate challenges.</jats:p>

<jats:p>Blood tests can detect the disease process early, avoiding complications and aiding treatment</jats:p>

<jats:p>Inspectors faulted analyses of clinical trial samples by Hoau-Yan Wang for drug developer Cassava Sciences</jats:p>

<jats:p>“Smart cables” will detect earthquakes, tsunamis, and global warming</jats:p>

<jats:p>Jeanne Marrazzo, an HIV prevention researcher, sees need for more “holistic” approach to community health problems</jats:p>

<jats:p>The mystery of “infantile amnesia” suggests memory works differently in the developing brain</jats:p>

<jats:p>Reducing defects boosts room-temperature performance of a thermoelectric device</jats:p>

<jats:p>A provocative proposition paves the way for a long-overdue conversation about consciousness</jats:p>

<jats:p>Printable mesoscopic perovskite solar cells (p-MPSCs) do not require the added hole-transport layer needed in traditional p-n junctions but have also exhibited lower power conversion efficiencies of about 19%. We performed device simulation and carrier dynamics analysis to design a p-MPSC with mesoporous layers of semiconducting titanium dioxide, insulating zirconium dioxide, and conducting carbon infiltrated with perovskite that enabled three-dimensional injection of photoexcited electrons into titanium dioxide for collection at a transparent conductor layer. Holes underwent long-distance diffusion toward the carbon back electrode, and this carrier separation reduced recombination at the back contact. Nonradiative recombination at the bulk titanium dioxide/perovskite interface was reduced by ammonium phosphate modification. The resulting p-MPSCs achieved a power conversion efficiency of 22.2% and maintained 97% of their initial efficiency after 750 hours of maximum power point tracking at 55 ± 5°C.</jats:p>