Introduction
Physics at the Limits
by Andrea Gawrylewski

Section 1: The Very Small

1.1    Measuring Beauty
         by Guy Wilkinson

1.2    The Particle Code
         by Matthew von Hippel

1.3    Split-Second Reaction
         by Petra Fromme and John C.H. Spence

1.4    The Neutrino Puzzle
         by Clara Moskowitz

1.5    Searching for the Dark
         by Leslie Rosenberg

Section 2: The Very Big

2.1    Black Holes from the Beginning of Time
         by Juan García-Bellido and Sébastien Clesse

2.2    Here Come the Waves
         by Davide Castelvecchi

2.3    Is Dark Matter Real?
         by Sabine Hossenfelder and Stacy S. McGaugh

Section 3: The Very Dense

3.1    The First Monster Black Holes
         by Priyamvada Natarajan

3.2    The Inner Lives of Neutron Stars
         by Clara Moskowitz

3.3    The Black Hole Test
         by Dimitrios Psaltis and Sheperd S. Doeleman

Section 4: In Theory

4.1    Head Trip
         by Sabine Hossenfelder

4.2    The Quantum Multiverse
         by Yasunori Nomura

4.3    Spooky Action
         by Ronald Hanson and Krister Shalm

4.4    Crossing the Quantum Divide
         by Tim Folger

4.5    The Impossibility of String Theory
         by Clara Moskowitz and Lee Billings