In spring 2013, Barron added MasteringChemistry prelecture homework assignments: short, untimed assignments due before lecture designed to help increase student awareness about new topics and to identify student misconceptions and areas of misunderstanding. Barron tells students it is okay to be confused after doing the homework because the concepts will become clear during class.
Global trade drives the world economy, but it is subject to constant change from economic, political and environmental forces.
This is the current state of global trade | World Economic Forum
2025 has brought both political friction and economic reinvention for the global trading system. From tariff shocks to South-South trade gains and climate-linked supply chain shifts, here are the must-read stories from the past 12 months.
Top stories: Middle East ceasefire impacts oil and shipping; EU-US trade deal a step closer; UNCTAD says global trade hit a record $35tn in 2025.
In turbulent times, trade adapts and keeps the world going, benefiting consumers and strengthening economies. Trade is once again under pressure amid growing political polarization, economic uncertainty and rising protectionism. Trade facilitation is key to helping trade to adapt by removing the unnecessary obstacles that slow down legitimate flows.
US tariffs have upended international trade and caused volatility in global markets. The uncertainty, experts say, holds significant implications for the global economy.
The value of global trade has only been magnified by recent turmoil, according to this chief economist, and globalisation will likely thrive as it takes on new forms and patterns.
US-China reach a fragile trade truce with tariff cuts and renewed talks, but deep structural tensions and strategic rivalry continue to cloud the outlook.