Green Party presidential candidate Ralph Nader lambasted Cisco Systems Inc. yesterday over its plans to construct a $1.3 billion campus on one of the last open spaces in California’s Silicon Valley, saying it would contribute to pollution, traffic congestion, and sprawl. Nader, who owns more than $1.1 million in Cisco stock, called on Cisco shareholders and shareholders in general to take action against developments and other corporate plans that don’t meet their approval. Meanwhile, the Sierra Club released a report yesterday highlighting smart-growth projects in every state and also drawing attention to examples of bad development decisions that have led to sprawl.